31485956 has 12 divisors (see below), whose sum is σ = 56878080. Its totient is φ = 15235080.

The previous prime is 31485953. The next prime is 31485959. The reversal of 31485956 is 65958413.

It is an interprime number because it is at equal distance from previous prime (31485953) and next prime (31485959).

It is not an unprimeable number, because it can be changed into a prime (31485953) 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, 126836 + ... + 127083.

It is an arithmetic number, because the mean of its divisors is an integer number (4739840).

Almost surely, 2^31485956 is an apocalyptic number.

It is an amenable number.

31485956 is a deficient number, since it is larger than the sum of its proper divisors (25392124).

31485956 is a wasteful number, since it uses less digits than its factorization.

31485956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253954 (or 253952 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The square root of 31485956 is about 5611.2348017170. The cubic root of 31485956 is about 315.7710380095.

The spelling of 31485956 in words is "thirty-one million, four hundred eighty-five thousand, nine hundred fifty-six".