311399133052 has 36 divisors (see below), whose sum is σ = 634036727520. Its totient is φ = 133432126464.

The previous prime is 311399133049. The next prime is 311399133053. The reversal of 311399133052 is 250331993113.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 311399132996 and 311399133014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311399133053) 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 11 ways as a sum of consecutive naturals, for example, 937788 + ... + 1225660.

It is an arithmetic number, because the mean of its divisors is an integer number (17612131320).

Almost surely, 2^311399133052 is an apocalyptic number.

It is an amenable number.

311399133052 is an abundant number, since it is smaller than the sum of its proper divisors (322637594468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311399133052 is a wasteful number, since it uses less digits than its factorization.

311399133052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293410 (or 293401 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 40.

The spelling of 311399133052 in words is "three hundred eleven billion, three hundred ninety-nine million, one hundred thirty-three thousand, fifty-two".