113203131123 has 8 divisors (see below), whose sum is σ = 151103195136. Its totient is φ = 75385910600.

The previous prime is 113203131113. The next prime is 113203131137. The reversal of 113203131123 is 321131302311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113203131123 - 2⁸ = 113203130867 is a prime.

It is a super-2 number, since 2×113203131123² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113203131123.

It is not an unprimeable number, because it can be changed into a prime (113203131103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20707683 + ... + 20713148.

It is an arithmetic number, because the mean of its divisors is an integer number (18887899392).

Almost surely, 2^113203131123 is an apocalyptic number.

113203131123 is a deficient number, since it is larger than the sum of its proper divisors (37900064013).

113203131123 is an equidigital number, since it uses as much as digits as its factorization.

113203131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41421745.

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

Adding to 113203131123 its reverse (321131302311), we get a palindrome (434334433434).

The spelling of 113203131123 in words is "one hundred thirteen billion, two hundred three million, one hundred thirty-one thousand, one hundred twenty-three".