312311302320 has 160 divisors (see below), whose sum is σ = 977152904640. Its totient is φ = 82513428480.

The previous prime is 312311302291. The next prime is 312311302363. The reversal of 312311302320 is 23203113213.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11380776 + ... + 11408184.

It is an arithmetic number, because the mean of its divisors is an integer number (6107205654).

Almost surely, 2^312311302320 is an apocalyptic number.

312311302320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312311302320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488576452320).

312311302320 is an abundant number, since it is smaller than the sum of its proper divisors (664841602320).

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

312311302320 is a wasteful number, since it uses less digits than its factorization.

312311302320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27863 (or 27857 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 312311302320 its reverse (23203113213), we get a palindrome (335514415533).

The spelling of 312311302320 in words is "three hundred twelve billion, three hundred eleven million, three hundred two thousand, three hundred twenty".