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131231302130 = 2536343361091
BaseRepresentation
bin111101000110111111…
…1101100000111110010
3110112201201211212121102
41322031333230013302
54122230203132010
6140141542124402
712324014443325
oct1721577540762
9415651755542
10131231302130
11507227156a5
1221525120702
13c4b5008886
1464ccc267bc
153630ed3ba5
hex1e8dfec1f2

131231302130 has 16 divisors (see below), whose sum is σ = 236223497664. Its totient is φ = 52490931120.

The previous prime is 131231302109. The next prime is 131231302133. The reversal of 131231302130 is 31203132131.

It is not an unprimeable number, because it can be changed into a prime (131231302133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182885 + ... + 543975.

It is an arithmetic number, because the mean of its divisors is an integer number (14763968604).

Almost surely, 2131231302130 is an apocalyptic number.

131231302130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131231302130 is a deficient number, since it is larger than the sum of its proper divisors (104992195534).

131231302130 is a wasteful number, since it uses less digits than its factorization.

131231302130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397441.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131231302130 its reverse (31203132131), we get a palindrome (162434434261).

The spelling of 131231302130 in words is "one hundred thirty-one billion, two hundred thirty-one million, three hundred two thousand, one hundred thirty".

Divisors: 1 2 5 10 36343 72686 181715 361091 363430 722182 1805455 3610910 13123130213 26246260426 65615651065 131231302130