123113331 has 32 divisors (see below), whose sum is σ = 209452800. Its totient is φ = 70683840.

The previous prime is 123113321. The next prime is 123113383. The reversal of 123113331 is 133311321.

It is a happy number.

It is not a de Polignac number, because 123113331 - 2⁵ = 123113299 is a prime.

It is a super-2 number, since 2×123113331² = 30313784539831122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123113321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5266 + ... + 16551.

It is an arithmetic number, because the mean of its divisors is an integer number (6545400).

Almost surely, 2^123113331 is an apocalyptic number.

123113331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123113331 is a deficient number, since it is larger than the sum of its proper divisors (86339469).

123113331 is a wasteful number, since it uses less digits than its factorization.

123113331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21856 (or 21850 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 123113331 is about 11095.6446860919. The cubic root of 123113331 is about 497.4716780591.

Adding to 123113331 its reverse (133311321), we get a palindrome (256424652).

The spelling of 123113331 in words is "one hundred twenty-three million, one hundred thirteen thousand, three hundred thirty-one".