31453057 has 6 divisors (see below), whose sum is σ = 31653398. Its totient is φ = 31253664.

The previous prime is 31453039. The next prime is 31453133. The reversal of 31453057 is 75035413.

It can be written as a sum of positive squares in 3 ways, for example, as 7403841 + 24049216 = 2721^2 + 4904^2 .

It is not a de Polignac number, because 31453057 - 2²³ = 23064449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31453157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99063 + ... + 99379.

Almost surely, 2^31453057 is an apocalyptic number.

It is an amenable number.

31453057 is a deficient number, since it is larger than the sum of its proper divisors (200341).

31453057 is an frugal number, since it uses more digits than its factorization.

31453057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 31453057 is about 5608.3025061065. The cubic root of 31453057 is about 315.6610188871.

The spelling of 31453057 in words is "thirty-one million, four hundred fifty-three thousand, fifty-seven".