113321123013 has 16 divisors (see below), whose sum is σ = 172704283776. Its totient is φ = 64745748480.

The previous prime is 113321123011. The next prime is 113321123051. The reversal of 113321123013 is 310321123311.

It is a happy number.

It is not a de Polignac number, because 113321123013 - 2¹ = 113321123011 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113321123011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229356 + ... + 528437.

It is an arithmetic number, because the mean of its divisors is an integer number (10794017736).

Almost surely, 2^113321123013 is an apocalyptic number.

It is an amenable number.

113321123013 is a deficient number, since it is larger than the sum of its proper divisors (59383160763).

113321123013 is an equidigital number, since it uses as much as digits as its factorization.

113321123013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764924.

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

Adding to 113321123013 its reverse (310321123311), we get a palindrome (423642246324).

The spelling of 113321123013 in words is "one hundred thirteen billion, three hundred twenty-one million, one hundred twenty-three thousand, thirteen".