313215020 has 48 divisors (see below), whose sum is σ = 666731520. Its totient is φ = 123588864.

The previous prime is 313214969. The next prime is 313215043. The reversal of 313215020 is 20512313.

It is a self number, because there is not a number n which added to its sum of digits gives 313215020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804986 + ... + 805374.

It is an arithmetic number, because the mean of its divisors is an integer number (13890240).

Almost surely, 2^313215020 is an apocalyptic number.

It is an amenable number.

313215020 is an abundant number, since it is smaller than the sum of its proper divisors (353516500).

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

313215020 is a wasteful number, since it uses less digits than its factorization.

313215020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 313215020 is about 17697.8817941583. The cubic root of 313215020 is about 679.1215733461.

Adding to 313215020 its reverse (20512313), we get a palindrome (333727333).

It can be divided in two parts, 3 and 13215020, that multiplied together give a triangular number (39645060 = T₈₉₀₄).

The spelling of 313215020 in words is "three hundred thirteen million, two hundred fifteen thousand, twenty".