311312133120 has 88 divisors (see below), whose sum is σ = 995712449904. Its totient is φ = 83016564736.

The previous prime is 311312133103. The next prime is 311312133199. The reversal of 311312133120 is 21331213113.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10118499 + ... + 10149218.

Almost surely, 2^311312133120 is an apocalyptic number.

311312133120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311312133120 is an abundant number, since it is smaller than the sum of its proper divisors (684400316784).

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

311312133120 is a wasteful number, since it uses less digits than its factorization.

311312133120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20267745 (or 20267727 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 311312133120 its reverse (21331213113), we get a palindrome (332643346233).

The spelling of 311312133120 in words is "three hundred eleven billion, three hundred twelve million, one hundred thirty-three thousand, one hundred twenty".