113423310021 has 24 divisors (see below), whose sum is σ = 186270217920. Its totient is φ = 61000770432.

The previous prime is 113423310001. The next prime is 113423310023. The reversal of 113423310021 is 120013324311.

It is not a de Polignac number, because 113423310021 - 2¹¹ = 113423307973 is a prime.

It is a super-2 number, since 2×113423310021² (a number of 23 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 113423310021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113423310023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22691241 + ... + 22696238.

It is an arithmetic number, because the mean of its divisors is an integer number (7761259080).

Almost surely, 2^113423310021 is an apocalyptic number.

It is an amenable number.

113423310021 is a deficient number, since it is larger than the sum of its proper divisors (72846907899).

113423310021 is a wasteful number, since it uses less digits than its factorization.

113423310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45387513 (or 45387506 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 113423310021 its reverse (120013324311), we get a palindrome (233436634332).

The spelling of 113423310021 in words is "one hundred thirteen billion, four hundred twenty-three million, three hundred ten thousand, twenty-one".