113515402123 has 16 divisors (see below), whose sum is σ = 114788890944. Its totient is φ = 112250136960.

The previous prime is 113515402057. The next prime is 113515402199. The reversal of 113515402123 is 321204515311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113515402123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113515402091 and 113515402100.

It is not an unprimeable number, because it can be changed into a prime (113515402423) 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, 38913661 + ... + 38916577.

It is an arithmetic number, because the mean of its divisors is an integer number (7174305684).

Almost surely, 2^113515402123 is an apocalyptic number.

113515402123 is a deficient number, since it is larger than the sum of its proper divisors (1273488821).

113515402123 is a wasteful number, since it uses less digits than its factorization.

113515402123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4182.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 113515402123 its reverse (321204515311), we get a palindrome (434719917434).

The spelling of 113515402123 in words is "one hundred thirteen billion, five hundred fifteen million, four hundred two thousand, one hundred twenty-three".