31574961 has 32 divisors (see below), whose sum is σ = 52295040. Its totient is φ = 18662400.

The previous prime is 31574927. The next prime is 31574969. The reversal of 31574961 is 16947513.

It is not a de Polignac number, because 31574961 - 2⁹ = 31574449 is a prime.

31574961 is a modest number, since divided by 4961 gives 3157 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31574969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10881 + ... + 13473.

It is an arithmetic number, because the mean of its divisors is an integer number (1634220).

Almost surely, 2^31574961 is an apocalyptic number.

It is an amenable number.

31574961 is a deficient number, since it is larger than the sum of its proper divisors (20720079).

31574961 is a wasteful number, since it uses less digits than its factorization.

31574961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654 (or 2648 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 31574961 is about 5619.1601685661. The cubic root of 31574961 is about 316.0683002768.

It can be divided in two parts, 3157 and 4961, that added together give a palindrome (8118).

The spelling of 31574961 in words is "thirty-one million, five hundred seventy-four thousand, nine hundred sixty-one".