31057494 has 32 divisors (see below), whose sum is σ = 67119360. Its totient is φ = 9523872.

The previous prime is 31057493. The next prime is 31057501. The reversal of 31057494 is 49475013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31057493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33789 + ... + 34695.

It is an arithmetic number, because the mean of its divisors is an integer number (2097480).

Almost surely, 2^31057494 is an apocalyptic number.

31057494 is an abundant number, since it is smaller than the sum of its proper divisors (36061866).

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

31057494 is a wasteful number, since it uses less digits than its factorization.

31057494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 31057494 is about 5572.9250847288. The cubic root of 31057494 is about 314.3321501832.

The spelling of 31057494 in words is "thirty-one million, fifty-seven thousand, four hundred ninety-four".