311326912361 has 4 divisors (see below), whose sum is σ = 311613322752. Its totient is φ = 311040501972.

The previous prime is 311326912343. The next prime is 311326912409. The reversal of 311326912361 is 163219623113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 163219623113 = 183971 ⋅887203.

It is a cyclic number.

It is not a de Polignac number, because 311326912361 - 2²⁶ = 311259803497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311326912661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143203565 + ... + 143205738.

It is an arithmetic number, because the mean of its divisors is an integer number (77903330688).

Almost surely, 2^311326912361 is an apocalyptic number.

It is an amenable number.

311326912361 is a deficient number, since it is larger than the sum of its proper divisors (286410391).

311326912361 is a wasteful number, since it uses less digits than its factorization.

311326912361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286410390.

The product of its digits is 34992, while the sum is 38.

The spelling of 311326912361 in words is "three hundred eleven billion, three hundred twenty-six million, nine hundred twelve thousand, three hundred sixty-one".