113123511 has 12 divisors (see below), whose sum is σ = 172000920. Its totient is φ = 71446320.

The previous prime is 113123477. The next prime is 113123513. The reversal of 113123511 is 115321311.

113123511 is a `hidden beast` number, since 1 + 1 + 312 + 351 + 1 = 666.

It is not a de Polignac number, because 113123511 - 2⁶ = 113123447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113123513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330600 + ... + 330941.

It is an arithmetic number, because the mean of its divisors is an integer number (14333410).

Almost surely, 2^113123511 is an apocalyptic number.

113123511 is a deficient number, since it is larger than the sum of its proper divisors (58877409).

113123511 is a wasteful number, since it uses less digits than its factorization.

113123511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661566 (or 661563 counting only the distinct ones).

The product of its digits is 90, while the sum is 18.

The square root of 113123511 is about 10635.9536948973. The cubic root of 113123511 is about 483.6348915873.

Adding to 113123511 its reverse (115321311), we get a palindrome (228444822).

It can be divided in two parts, 1131 and 23511, that added together give a palindrome (24642).

The spelling of 113123511 in words is "one hundred thirteen million, one hundred twenty-three thousand, five hundred eleven".