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131032345231450 = 25213269987746659
BaseRepresentation
bin11101110010110001011000…
…011001000100000001011010
3122011221120101102200201101001
4131302301120121010001122
5114133313220334401300
61142403232311015214
736412526444325025
oct3562613031040132
9564846342621331
10131032345231450
1138829561971263
1212842b4336a50a
1358163b2a66a20
14244dddc2d41bc
1510236ba79216a
hex772c5864405a

131032345231450 has 48 divisors (see below), whose sum is σ = 262469190584160. Its totient is φ = 48380929629120.

The previous prime is 131032345231213. The next prime is 131032345231453. The reversal of 131032345231450 is 54132543230131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131032345231453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175118221 + ... + 175864879.

It is an arithmetic number, because the mean of its divisors is an integer number (5468108137170).

Almost surely, 2131032345231450 is an apocalyptic number.

131032345231450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131032345231450 is an abundant number, since it is smaller than the sum of its proper divisors (131436845352710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131032345231450 is a wasteful number, since it uses less digits than its factorization.

131032345231450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016671 (or 1016666 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 131032345231450 its reverse (54132543230131), we get a palindrome (185164888461581).

The spelling of 131032345231450 in words is "one hundred thirty-one trillion, thirty-two billion, three hundred forty-five million, two hundred thirty-one thousand, four hundred fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 269987 539974 746659 1349935 1493318 2699870 3509831 3733295 6749675 7019662 7466590 9706567 13499350 17549155 18666475 19413134 35098310 37332950 48532835 87745775 97065670 175491550 242664175 485328350 201588223433 403176446866 1007941117165 2015882234330 2620646904629 5039705585825 5241293809258 10079411171650 13103234523145 26206469046290 65516172615725 131032345231450