31664601 has 12 divisors (see below), whose sum is σ = 47432112. Its totient is φ = 21109572.

The previous prime is 31664599. The next prime is 31664603. The reversal of 31664601 is 10646613.

31664601 is a `hidden beast` number, since 3 + 16 + 646 + 0 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (31664599) and next prime (31664603).

It is not a de Polignac number, because 31664601 - 2¹ = 31664599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (31664603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64911 + ... + 65396.

It is an arithmetic number, because the mean of its divisors is an integer number (3952676).

Almost surely, 2^31664601 is an apocalyptic number.

It is an amenable number.

31664601 is a deficient number, since it is larger than the sum of its proper divisors (15767511).

31664601 is an equidigital number, since it uses as much as digits as its factorization.

31664601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130322 (or 130310 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 31664601 is about 5627.1307964184. The cubic root of 31664601 is about 316.3671192596.

The spelling of 31664601 in words is "thirty-one million, six hundred sixty-four thousand, six hundred one".