931322140313 has 2 divisors, whose sum is σ = 931322140314. Its totient is φ = 931322140312.

The previous prime is 931322140291. The next prime is 931322140367. The reversal of 931322140313 is 313041223139.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 745326602329 + 185995537984 = 863323^2 + 431272^2 .

It is an emirp because it is prime and its reverse (313041223139) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 931322140313 - 2⁶ = 931322140249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 931322140313.

It is not a weakly prime, because it can be changed into another prime (931322140393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465661070156 + 465661070157.

It is an arithmetic number, because the mean of its divisors is an integer number (465661070157).

Almost surely, 2^931322140313 is an apocalyptic number.

It is an amenable number.

931322140313 is a deficient number, since it is larger than the sum of its proper divisors (1).

931322140313 is an equidigital number, since it uses as much as digits as its factorization.

931322140313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 931322140313 in words is "nine hundred thirty-one billion, three hundred twenty-two million, one hundred forty thousand, three hundred thirteen".