31664030 has 16 divisors (see below), whose sum is σ = 60348240. Its totient is φ = 11920512.

The previous prime is 31664023. The next prime is 31664033. The reversal of 31664030 is 3046613.

It is a super-2 number, since 2×31664030² = 2005221591681800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31663987 and 31664005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31664033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92960 + ... + 93299.

It is an arithmetic number, because the mean of its divisors is an integer number (3771765).

Almost surely, 2^31664030 is an apocalyptic number.

31664030 is a deficient number, since it is larger than the sum of its proper divisors (28684210).

31664030 is a wasteful number, since it uses less digits than its factorization.

31664030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186283.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 31664030 is about 5627.0800598534. The cubic root of 31664030 is about 316.3652175912.

It can be divided in two parts, 316 and 64030, that added together give a palindrome (64346).

The spelling of 31664030 in words is "thirty-one million, six hundred sixty-four thousand, thirty".