313220020 has 24 divisors (see below), whose sum is σ = 658522368. Its totient is φ = 125143200.

The previous prime is 313220009. The next prime is 313220021. The reversal of 313220020 is 20022313.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313220021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9625 + ... + 26815.

It is an arithmetic number, because the mean of its divisors is an integer number (27438432).

Almost surely, 2^313220020 is an apocalyptic number.

It is an amenable number.

313220020 is an abundant number, since it is smaller than the sum of its proper divisors (345302348).

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

313220020 is a wasteful number, since it uses less digits than its factorization.

313220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18111 (or 18109 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 313220020 is about 17698.0230534374. The cubic root of 313220020 is about 679.1251870402.

Adding to 313220020 its reverse (20022313), we get a palindrome (333242333).

The spelling of 313220020 in words is "three hundred thirteen million, two hundred twenty thousand, twenty".