31324755742309 has 2 divisors, whose sum is σ = 31324755742310. Its totient is φ = 31324755742308.

The previous prime is 31324755742303. The next prime is 31324755742337. The reversal of 31324755742309 is 90324755742313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31081494706084 + 243261036225 = 5575078^2 + 493215^2 .

It is a cyclic number.

It is not a de Polignac number, because 31324755742309 - 2²⁵ = 31324722187877 is a prime.

It is a super-2 number, since 2×31324755742309² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31324755742309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31324755742303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15662377871154 + 15662377871155.

It is an arithmetic number, because the mean of its divisors is an integer number (15662377871155).

Almost surely, 2^{31324755742309} is an apocalyptic number.

It is an amenable number.

31324755742309 is a deficient number, since it is larger than the sum of its proper divisors (1).

31324755742309 is an equidigital number, since it uses as much as digits as its factorization.

31324755742309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19051200, while the sum is 55.

The spelling of 31324755742309 in words is "thirty-one trillion, three hundred twenty-four billion, seven hundred fifty-five million, seven hundred forty-two thousand, three hundred nine".