313103120232 has 128 divisors (see below), whose sum is σ = 900257955840. Its totient is φ = 88891326720.

The previous prime is 313103120221. The next prime is 313103120263. The reversal of 313103120232 is 232021301313.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 313103120199 and 313103120208.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31986843 + ... + 31996629.

It is an arithmetic number, because the mean of its divisors is an integer number (7033265280).

Almost surely, 2^313103120232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313103120232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450128977920).

313103120232 is an abundant number, since it is smaller than the sum of its proper divisors (587154835608).

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

313103120232 is a wasteful number, since it uses less digits than its factorization.

313103120232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10991 (or 10987 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 313103120232 its reverse (232021301313), we get a palindrome (545124421545).

The spelling of 313103120232 in words is "three hundred thirteen billion, one hundred three million, one hundred twenty thousand, two hundred thirty-two".