123311125 has 32 divisors (see below), whose sum is σ = 179262720. Its totient is φ = 82929600.

The previous prime is 123311117. The next prime is 123311129. The reversal of 123311125 is 521113321.

It is not a de Polignac number, because 123311125 - 2³ = 123311117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45046 + ... + 47704.

It is an arithmetic number, because the mean of its divisors is an integer number (5601960).

Almost surely, 2^123311125 is an apocalyptic number.

It is an amenable number.

123311125 is a deficient number, since it is larger than the sum of its proper divisors (55951595).

123311125 is an equidigital number, since it uses as much as digits as its factorization.

123311125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734 (or 2724 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 123311125 is about 11104.5542458939. The cubic root of 123311125 is about 497.7379483441.

Adding to 123311125 its reverse (521113321), we get a palindrome (644424446).

It can be divided in two parts, 12331 and 1125, that added together give a square (13456 = 116²).

The spelling of 123311125 in words is "one hundred twenty-three million, three hundred eleven thousand, one hundred twenty-five".