31321344312319 has 2 divisors, whose sum is σ = 31321344312320. Its totient is φ = 31321344312318.

The previous prime is 31321344312281. The next prime is 31321344312449. The reversal of 31321344312319 is 91321344312313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31321344312319 - 2¹³ = 31321344304127 is a prime.

It is a super-2 number, since 2×31321344312319² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31321344372319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660672156159 + 15660672156160.

It is an arithmetic number, because the mean of its divisors is an integer number (15660672156160).

Almost surely, 2^{31321344312319} is an apocalyptic number.

31321344312319 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321344312319 is an equidigital number, since it uses as much as digits as its factorization.

31321344312319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 40.

The spelling of 31321344312319 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred forty-four million, three hundred twelve thousand, three hundred nineteen".