31253057 has 4 divisors (see below), whose sum is σ = 34094256. Its totient is φ = 28411860.

The previous prime is 31253023. The next prime is 31253059. The reversal of 31253057 is 75035213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75035213 = 11 ⋅6821383.

It is a cyclic number.

It is not a de Polignac number, because 31253057 - 2¹⁶ = 31187521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31253059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1420583 + ... + 1420604.

It is an arithmetic number, because the mean of its divisors is an integer number (8523564).

Almost surely, 2^31253057 is an apocalyptic number.

It is an amenable number.

31253057 is a deficient number, since it is larger than the sum of its proper divisors (2841199).

31253057 is a wasteful number, since it uses less digits than its factorization.

31253057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841198.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 31253057 is about 5590.4433634552. The cubic root of 31253057 is about 314.9905330152.

The spelling of 31253057 in words is "thirty-one million, two hundred fifty-three thousand, fifty-seven".