131055431 has 12 divisors (see below), whose sum is σ = 149931432. Its totient is φ = 113854848.

The previous prime is 131055427. The next prime is 131055469. The reversal of 131055431 is 134550131.

It is not a de Polignac number, because 131055431 - 2² = 131055427 is a prime.

It is a super-2 number, since 2×131055431² = 34351051989191522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131055397 and 131055406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131055401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13685 + ... + 21198.

It is an arithmetic number, because the mean of its divisors is an integer number (12494286).

Almost surely, 2^131055431 is an apocalyptic number.

131055431 is a deficient number, since it is larger than the sum of its proper divisors (18876001).

131055431 is a wasteful number, since it uses less digits than its factorization.

131055431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34930 (or 34913 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 131055431 is about 11447.9444006337. The cubic root of 131055431 is about 507.9469313919.

The spelling of 131055431 in words is "one hundred thirty-one million, fifty-five thousand, four hundred thirty-one".