39297231 has 12 divisors (see below), whose sum is σ = 58865352. Its totient is φ = 26197992.

The previous prime is 39297191. The next prime is 39297239. The reversal of 39297231 is 13279293.

It is not a de Polignac number, because 39297231 - 2²³ = 30908623 is a prime.

It is a super-2 number, since 2×39297231² = 3088544728534722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39297239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80616 + ... + 81101.

It is an arithmetic number, because the mean of its divisors is an integer number (4905446).

Almost surely, 2^39297231 is an apocalyptic number.

39297231 is a deficient number, since it is larger than the sum of its proper divisors (19568121).

39297231 is an equidigital number, since it uses as much as digits as its factorization.

39297231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161732 (or 161720 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 39297231 is about 6268.7503539382. The cubic root of 39297231 is about 339.9804804250.

The spelling of 39297231 in words is "thirty-nine million, two hundred ninety-seven thousand, two hundred thirty-one".