97431572 has 12 divisors (see below), whose sum is σ = 194863200. Its totient is φ = 41756376.

The previous prime is 97431559. The next prime is 97431589. The reversal of 97431572 is 27513479.

97431572 is an admirable number.

It is a super-2 number, since 2×97431572² = 18985822444782368, which contains 22 as substring.

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, 1739822 + ... + 1739877.

It is an arithmetic number, because the mean of its divisors is an integer number (16238600).

Almost surely, 2^97431572 is an apocalyptic number.

It is an amenable number.

97431572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

97431572 is a wasteful number, since it uses less digits than its factorization.

97431572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479710 (or 3479708 counting only the distinct ones).

The product of its digits is 52920, while the sum is 38.

The square root of 97431572 is about 9870.7432344277. The cubic root of 97431572 is about 460.1505052569.

The spelling of 97431572 in words is "ninety-seven million, four hundred thirty-one thousand, five hundred seventy-two".