131097724 has 6 divisors (see below), whose sum is σ = 229421024. Its totient is φ = 65548860.

The previous prime is 131097709. The next prime is 131097767. The reversal of 131097724 is 427790131.

It is a super-2 number, since 2×131097724² = 34373226475960352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131097724.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16387212 + ... + 16387219.

Almost surely, 2^131097724 is an apocalyptic number.

It is an amenable number.

131097724 is a deficient number, since it is larger than the sum of its proper divisors (98323300).

131097724 is a wasteful number, since it uses less digits than its factorization.

131097724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32774435 (or 32774433 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 131097724 is about 11449.7914391486. The cubic root of 131097724 is about 508.0015654983.

The spelling of 131097724 in words is "one hundred thirty-one million, ninety-seven thousand, seven hundred twenty-four".