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131013850 = 25211238207
BaseRepresentation
bin1111100111100…
…01110011011010
3100010112012012211
413303301303122
5232014420400
621000025334
73150412402
oct763616332
9303465184
10131013850
1167a54710
1237a6224a
13211b20b6
1413585802
15b77ddba
hex7cf1cda

131013850 has 24 divisors (see below), whose sum is σ = 265840128. Its totient is φ = 47641200.

The previous prime is 131013847. The next prime is 131013853. The reversal of 131013850 is 58310131.

It is an interprime number because it is at equal distance from previous prime (131013847) and next prime (131013853).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (131013853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118554 + ... + 119653.

It is an arithmetic number, because the mean of its divisors is an integer number (11076672).

Almost surely, 2131013850 is an apocalyptic number.

131013850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131013850 is an abundant number, since it is smaller than the sum of its proper divisors (134826278).

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

131013850 is a wasteful number, since it uses less digits than its factorization.

131013850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238230 (or 238225 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 131013850 is about 11446.1281663277. The cubic root of 131013850 is about 507.8932055872.

Adding to 131013850 its reverse (58310131), we get a palindrome (189323981).

The spelling of 131013850 in words is "one hundred thirty-one million, thirteen thousand, eight hundred fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 275 550 238207 476414 1191035 2382070 2620277 5240554 5955175 11910350 13101385 26202770 65506925 131013850