31032613609 has 2 divisors, whose sum is σ = 31032613610. Its totient is φ = 31032613608.

The previous prime is 31032613553. The next prime is 31032613673. The reversal of 31032613609 is 90631623013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24862982400 + 6169631209 = 157680^2 + 78547^2 .

It is a cyclic number.

It is not a de Polignac number, because 31032613609 - 2²¹ = 31030516457 is a prime.

It is not a weakly prime, because it can be changed into another prime (31032613009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15516306804 + 15516306805.

It is an arithmetic number, because the mean of its divisors is an integer number (15516306805).

Almost surely, 2^31032613609 is an apocalyptic number.

It is an amenable number.

31032613609 is a deficient number, since it is larger than the sum of its proper divisors (1).

31032613609 is an equidigital number, since it uses as much as digits as its factorization.

31032613609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The spelling of 31032613609 in words is "thirty-one billion, thirty-two million, six hundred thirteen thousand, six hundred nine".