31604621604679 has 2 divisors, whose sum is σ = 31604621604680. Its totient is φ = 31604621604678.

The previous prime is 31604621604629. The next prime is 31604621604727. The reversal of 31604621604679 is 97640612640613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31604621604679 - 2¹³ = 31604621596487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31604621604629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15802310802339 + 15802310802340.

It is an arithmetic number, because the mean of its divisors is an integer number (15802310802340).

Almost surely, 2^{31604621604679} is an apocalyptic number.

31604621604679 is a deficient number, since it is larger than the sum of its proper divisors (1).

31604621604679 is an equidigital number, since it uses as much as digits as its factorization.

31604621604679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 31604621604679 in words is "thirty-one trillion, six hundred four billion, six hundred twenty-one million, six hundred four thousand, six hundred seventy-nine".