31024464641609 has 2 divisors, whose sum is σ = 31024464641610. Its totient is φ = 31024464641608.

The previous prime is 31024464641581. The next prime is 31024464641669. The reversal of 31024464641609 is 90614646442013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17706548647225 + 13317915994384 = 4207915^2 + 3649372^2 .

It is a cyclic number.

It is not a de Polignac number, because 31024464641609 - 2⁸ = 31024464641353 is a prime.

It is not a weakly prime, because it can be changed into another prime (31024464641669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15512232320804 + 15512232320805.

It is an arithmetic number, because the mean of its divisors is an integer number (15512232320805).

Almost surely, 2^{31024464641609} is an apocalyptic number.

It is an amenable number.

31024464641609 is a deficient number, since it is larger than the sum of its proper divisors (1).

31024464641609 is an equidigital number, since it uses as much as digits as its factorization.

31024464641609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 50.

The spelling of 31024464641609 in words is "thirty-one trillion, twenty-four billion, four hundred sixty-four million, six hundred forty-one thousand, six hundred nine".