312031303020 has 72 divisors (see below), whose sum is σ = 972075917904. Its totient is φ = 80959471488.

The previous prime is 312031302997. The next prime is 312031303037. The reversal of 312031303020 is 20303130213.

312031303020 is a `hidden beast` number, since 31 + 20 + 313 + 0 + 302 + 0 = 666.

It is a super-2 number, since 2×312031303020² (a number of 24 digits) contains 22 as substring.

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 = 312031302984 and 312031303002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23419114 + ... + 23432433.

Almost surely, 2^312031303020 is an apocalyptic number.

312031303020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312031303020 is an abundant number, since it is smaller than the sum of its proper divisors (660044614884).

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

312031303020 is a wasteful number, since it uses less digits than its factorization.

312031303020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46851599 (or 46851594 counting only the distinct ones).

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

Adding to 312031303020 its reverse (20303130213), we get a palindrome (332334433233).

The spelling of 312031303020 in words is "three hundred twelve billion, thirty-one million, three hundred three thousand, twenty".