31604332297 has 2 divisors, whose sum is σ = 31604332298. Its totient is φ = 31604332296.

The previous prime is 31604332241. The next prime is 31604332381. The reversal of 31604332297 is 79223340613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30349472521 + 1254859776 = 174211^2 + 35424^2 .

It is an emirp because it is prime and its reverse (79223340613) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31604332297 is a prime.

It is not a weakly prime, because it can be changed into another prime (31604302297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15802166148 + 15802166149.

It is an arithmetic number, because the mean of its divisors is an integer number (15802166149).

Almost surely, 2^31604332297 is an apocalyptic number.

It is an amenable number.

31604332297 is a deficient number, since it is larger than the sum of its proper divisors (1).

31604332297 is an equidigital number, since it uses as much as digits as its factorization.

31604332297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 40.

The spelling of 31604332297 in words is "thirty-one billion, six hundred four million, three hundred thirty-two thousand, two hundred ninety-seven".