131561452 has 12 divisors (see below), whose sum is σ = 251162856. Its totient is φ = 59800640.

The previous prime is 131561407. The next prime is 131561501. The reversal of 131561452 is 254165131.

It is a self number, because there is not a number n which added to its sum of digits gives 131561452.

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, 1494973 + ... + 1495060.

It is an arithmetic number, because the mean of its divisors is an integer number (20930238).

Almost surely, 2^131561452 is an apocalyptic number.

It is an amenable number.

131561452 is a deficient number, since it is larger than the sum of its proper divisors (119601404).

131561452 is a wasteful number, since it uses less digits than its factorization.

131561452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990048 (or 2990046 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 131561452 is about 11470.0240627472. The cubic root of 131561452 is about 508.5998401385.

The spelling of 131561452 in words is "one hundred thirty-one million, five hundred sixty-one thousand, four hundred fifty-two".