313313231220 has 96 divisors (see below), whose sum is σ = 962561819520. Its totient is φ = 75515650560.

The previous prime is 313313231149. The next prime is 313313231227. The reversal of 313313231220 is 22132313313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313313231227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1257835 + ... + 1486194.

It is an arithmetic number, because the mean of its divisors is an integer number (10026685620).

Almost surely, 2^313313231220 is an apocalyptic number.

313313231220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313313231220 is an abundant number, since it is smaller than the sum of its proper divisors (649248588300).

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

313313231220 is a wasteful number, since it uses less digits than its factorization.

313313231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2744225 (or 2744223 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 313313231220 its reverse (22132313313), we get a palindrome (335445544533).

The spelling of 313313231220 in words is "three hundred thirteen billion, three hundred thirteen million, two hundred thirty-one thousand, two hundred twenty".