313121113239 has 32 divisors (see below), whose sum is σ = 465015769344. Its totient is φ = 185824647680.

The previous prime is 313121113231. The next prime is 313121113247. The reversal of 313121113239 is 932311121313.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (313121113231) and next prime (313121113247).

It is a cyclic number.

It is not a de Polignac number, because 313121113239 - 2³ = 313121113231 is a prime.

It is a super-2 number, since 2×313121113239² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313121113231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196332 + ... + 815345.

It is an arithmetic number, because the mean of its divisors is an integer number (14531742792).

Almost surely, 2^313121113239 is an apocalyptic number.

313121113239 is a deficient number, since it is larger than the sum of its proper divisors (151894656105).

313121113239 is a wasteful number, since it uses less digits than its factorization.

313121113239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011887.

The product of its digits is 2916, while the sum is 30.

The spelling of 313121113239 in words is "three hundred thirteen billion, one hundred twenty-one million, one hundred thirteen thousand, two hundred thirty-nine".