113123023220 has 24 divisors (see below), whose sum is σ = 237575449608. Its totient is φ = 45245952000.

The previous prime is 113123023201. The next prime is 113123023241. The reversal of 113123023220 is 22320321311.

It can be written as a sum of positive squares in 4 ways, for example, as 58872228496 + 54250794724 = 242636^2 + 232918^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 113123023192 and 113123023201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91640 + ... + 484400.

It is an arithmetic number, because the mean of its divisors is an integer number (9898977067).

Almost surely, 2^113123023220 is an apocalyptic number.

113123023220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113123023220 is an abundant number, since it is smaller than the sum of its proper divisors (124452426388).

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

113123023220 is a wasteful number, since it uses less digits than its factorization.

113123023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407171 (or 407169 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 113123023220 its reverse (22320321311), we get a palindrome (135443344531).

The spelling of 113123023220 in words is "one hundred thirteen billion, one hundred twenty-three million, twenty-three thousand, two hundred twenty".