131536831 has 8 divisors (see below), whose sum is σ = 134225424. Its totient is φ = 128856000.

The previous prime is 131536807. The next prime is 131536861. The reversal of 131536831 is 138635131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131536831 - 2⁵ = 131536799 is a prime.

It is a super-2 number, since 2×131536831² = 34603875819045122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131536793 and 131536802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131536861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42331 + ... + 45331.

It is an arithmetic number, because the mean of its divisors is an integer number (16778178).

Almost surely, 2^131536831 is an apocalyptic number.

131536831 is a deficient number, since it is larger than the sum of its proper divisors (2688593).

131536831 is an equidigital number, since it uses as much as digits as its factorization.

131536831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881.

The product of its digits is 6480, while the sum is 31.

The square root of 131536831 is about 11468.9507366629. The cubic root of 131536831 is about 508.5681109409.

The spelling of 131536831 in words is "one hundred thirty-one million, five hundred thirty-six thousand, eight hundred thirty-one".