311400132312 has 64 divisors (see below), whose sum is σ = 819608400000. Its totient is φ = 98320760064.

The previous prime is 311400132271. The next prime is 311400132359. The reversal of 311400132312 is 213231004113.

It is a super-2 number, since 2×311400132312² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2898939 + ... + 3004437.

It is an arithmetic number, because the mean of its divisors is an integer number (12806381250).

Almost surely, 2^311400132312 is an apocalyptic number.

It is an amenable number.

311400132312 is an abundant number, since it is smaller than the sum of its proper divisors (508208267688).

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

311400132312 is a wasteful number, since it uses less digits than its factorization.

311400132312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112000 (or 111996 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 311400132312 its reverse (213231004113), we get a palindrome (524631136425).

The spelling of 311400132312 in words is "three hundred eleven billion, four hundred million, one hundred thirty-two thousand, three hundred twelve".