313123020 has 48 divisors (see below), whose sum is σ = 1001995008. Its totient is φ = 71570880.

The previous prime is 313123003. The next prime is 313123043. The reversal of 313123020 is 20321313.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 372346 + ... + 373185.

It is an arithmetic number, because the mean of its divisors is an integer number (20874896).

Almost surely, 2^313123020 is an apocalyptic number.

313123020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313123020 is an abundant number, since it is smaller than the sum of its proper divisors (688871988).

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

313123020 is a wasteful number, since it uses less digits than its factorization.

313123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745550 (or 745548 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 313123020 is about 17695.2824221599. The cubic root of 313123020 is about 679.0550745098.

Adding to 313123020 its reverse (20321313), we get a palindrome (333444333).

The spelling of 313123020 in words is "three hundred thirteen million, one hundred twenty-three thousand, twenty".