113313121320 has 96 divisors (see below), whose sum is σ = 395439688800. Its totient is φ = 25900140672.

The previous prime is 113313121283. The next prime is 113313121331. The reversal of 113313121320 is 23121313311.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9629590 + ... + 9641349.

It is an arithmetic number, because the mean of its divisors is an integer number (4119163425).

Almost surely, 2^113313121320 is an apocalyptic number.

113313121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113313121320 is an abundant number, since it is smaller than the sum of its proper divisors (282126567480).

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

113313121320 is a wasteful number, since it uses less digits than its factorization.

113313121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19270967 (or 19270956 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 113313121320 its reverse (23121313311), we get a palindrome (136434434631).

The spelling of 113313121320 in words is "one hundred thirteen billion, three hundred thirteen million, one hundred twenty-one thousand, three hundred twenty".