131606256 has 20 divisors (see below), whose sum is σ = 339982952. Its totient is φ = 43868736.

The previous prime is 131606249. The next prime is 131606257. The reversal of 131606256 is 652606131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131606257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370851 + ... + 1370946.

Almost surely, 2^131606256 is an apocalyptic number.

131606256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131606256 is an abundant number, since it is smaller than the sum of its proper divisors (208376696).

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

131606256 is a wasteful number, since it uses less digits than its factorization.

131606256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741808 (or 2741802 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 131606256 is about 11471.9769874246. The cubic root of 131606256 is about 508.6575691075.

The spelling of 131606256 in words is "one hundred thirty-one million, six hundred six thousand, two hundred fifty-six".