312310020 has 48 divisors (see below), whose sum is σ = 953967168. Its totient is φ = 75711360.

The previous prime is 312309983. The next prime is 312310051. The reversal of 312310020 is 20013213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 312309978 and 312310005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235939 + ... + 237258.

It is an arithmetic number, because the mean of its divisors is an integer number (19874316).

Almost surely, 2^312310020 is an apocalyptic number.

312310020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312310020 is an abundant number, since it is smaller than the sum of its proper divisors (641657148).

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

312310020 is a wasteful number, since it uses less digits than its factorization.

312310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473220 (or 473218 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 312310020 is about 17672.2952668860. The cubic root of 312310020 is about 678.4668602567.

Adding to 312310020 its reverse (20013213), we get a palindrome (332323233).

The spelling of 312310020 in words is "three hundred twelve million, three hundred ten thousand, twenty".