31057137 has 12 divisors (see below), whose sum is σ = 45904144. Its totient is φ = 20223000.

The previous prime is 31057129. The next prime is 31057141. The reversal of 31057137 is 73175013.

It is not a de Polignac number, because 31057137 - 2³ = 31057129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31057137.

It is not an unprimeable number, because it can be changed into a prime (31057127) 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, 39739 + ... + 40512.

Almost surely, 2^31057137 is an apocalyptic number.

It is an amenable number.

31057137 is a deficient number, since it is larger than the sum of its proper divisors (14847007).

31057137 is a wasteful number, since it uses less digits than its factorization.

31057137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80300 (or 80297 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 27.

The square root of 31057137 is about 5572.8930547786. The cubic root of 31057137 is about 314.3309457824.

The spelling of 31057137 in words is "thirty-one million, fifty-seven thousand, one hundred thirty-seven".