31604611201 has 2 divisors, whose sum is σ = 31604611202. Its totient is φ = 31604611200.

The previous prime is 31604611193. The next prime is 31604611319. The reversal of 31604611201 is 10211640613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27007635600 + 4596975601 = 164340^2 + 67801^2 .

It is a cyclic number.

It is not a de Polignac number, because 31604611201 - 2³ = 31604611193 is a prime.

It is not a weakly prime, because it can be changed into another prime (31604617201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15802305600 + 15802305601.

It is an arithmetic number, because the mean of its divisors is an integer number (15802305601).

Almost surely, 2^31604611201 is an apocalyptic number.

It is an amenable number.

31604611201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31604611201 is an equidigital number, since it uses as much as digits as its factorization.

31604611201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 31604611201 in words is "thirty-one billion, six hundred four million, six hundred eleven thousand, two hundred one".