312030331020 has 36 divisors (see below), whose sum is σ = 946492004640. Its totient is φ = 83208088224.

The previous prime is 312030331007. The next prime is 312030331031. The reversal of 312030331020 is 20133030213.

312030331020 is a `hidden beast` number, since 31 + 2 + 0 + 303 + 310 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 312030330984 and 312030331002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 866750740 + ... + 866751099.

Almost surely, 2^312030331020 is an apocalyptic number.

312030331020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312030331020 is an abundant number, since it is smaller than the sum of its proper divisors (634461673620).

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

312030331020 is a wasteful number, since it uses less digits than its factorization.

312030331020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733501854 (or 1733501849 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 312030331020 its reverse (20133030213), we get a palindrome (332163361233).

The spelling of 312030331020 in words is "three hundred twelve billion, thirty million, three hundred thirty-one thousand, twenty".