131029456 has 20 divisors (see below), whose sum is σ = 255872512. Its totient is φ = 64997856.

The previous prime is 131029447. The next prime is 131029477. The reversal of 131029456 is 654920131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30210 + ... + 34273.

Almost surely, 2^131029456 is an apocalyptic number.

131029456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131029456 is a deficient number, since it is larger than the sum of its proper divisors (124843056).

131029456 is a wasteful number, since it uses less digits than its factorization.

131029456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64618 (or 64612 counting only the distinct ones).

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

The square root of 131029456 is about 11446.8098612670. The cubic root of 131029456 is about 507.9133710548.

Adding to 131029456 its reverse (654920131), we get a palindrome (785949587).

The spelling of 131029456 in words is "one hundred thirty-one million, twenty-nine thousand, four hundred fifty-six".