123433131 has 16 divisors (see below), whose sum is σ = 168648480. Its totient is φ = 80271360.

The previous prime is 123433129. The next prime is 123433151. The reversal of 123433131 is 131334321.

It is not a de Polignac number, because 123433131 - 2¹ = 123433129 is a prime.

It is a super-2 number, since 2×123433131² = 30471475656926322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123433098 and 123433107.

It is not an unprimeable number, because it can be changed into a prime (123433151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26635 + ... + 30923.

It is an arithmetic number, because the mean of its divisors is an integer number (10540530).

Almost surely, 2^123433131 is an apocalyptic number.

123433131 is a deficient number, since it is larger than the sum of its proper divisors (45215349).

123433131 is a wasteful number, since it uses less digits than its factorization.

123433131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4526.

The product of its digits is 648, while the sum is 21.

The square root of 123433131 is about 11110.0463995431. The cubic root of 123433131 is about 497.9020508640.

Adding to 123433131 its reverse (131334321), we get a palindrome (254767452).

The spelling of 123433131 in words is "one hundred twenty-three million, four hundred thirty-three thousand, one hundred thirty-one".