113123020403 has 16 divisors (see below), whose sum is σ = 118164009600. Its totient is φ = 108163117440.

The previous prime is 113123020379. The next prime is 113123020427. The reversal of 113123020403 is 304020321311.

It is an interprime number because it is at equal distance from previous prime (113123020379) and next prime (113123020427).

It is a cyclic number.

It is not a de Polignac number, because 113123020403 - 2²⁰ = 113121971827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113123020433) 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, 1209425 + ... + 1299597.

It is an arithmetic number, because the mean of its divisors is an integer number (7385250600).

Almost surely, 2^113123020403 is an apocalyptic number.

113123020403 is a deficient number, since it is larger than the sum of its proper divisors (5040989197).

113123020403 is a wasteful number, since it uses less digits than its factorization.

113123020403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90622.

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

Adding to 113123020403 its reverse (304020321311), we get a palindrome (417143341714).

The spelling of 113123020403 in words is "one hundred thirteen billion, one hundred twenty-three million, twenty thousand, four hundred three".