131894520 has 32 divisors (see below), whose sum is σ = 395683920. Its totient is φ = 35171840.

The previous prime is 131894437. The next prime is 131894527. The reversal of 131894520 is 25498131.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131894527) 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, 549441 + ... + 549680.

Almost surely, 2^131894520 is an apocalyptic number.

131894520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131894520 is an abundant number, since it is smaller than the sum of its proper divisors (263789400).

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

131894520 is a wasteful number, since it uses less digits than its factorization.

131894520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099135 (or 1099131 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 131894520 is about 11484.5339478796. The cubic root of 131894520 is about 509.0286779606.

The spelling of 131894520 in words is "one hundred thirty-one million, eight hundred ninety-four thousand, five hundred twenty".