123131323 has 16 divisors (see below), whose sum is σ = 152639424. Its totient is φ = 96906240.

The previous prime is 123131293. The next prime is 123131329. The reversal of 123131323 is 323131321.

It is a cyclic number.

It is not a de Polignac number, because 123131323 - 2⁵ = 123131291 is a prime.

It is a super-2 number, since 2×123131323² = 30322645407460658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123131323.

It is not an unprimeable number, because it can be changed into a prime (123131329) 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, 7740 + ... + 17497.

It is an arithmetic number, because the mean of its divisors is an integer number (9539964).

Almost surely, 2^123131323 is an apocalyptic number.

123131323 is a deficient number, since it is larger than the sum of its proper divisors (29508101).

123131323 is a wasteful number, since it uses less digits than its factorization.

123131323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25302.

The product of its digits is 324, while the sum is 19.

The square root of 123131323 is about 11096.4554250445. The cubic root of 123131323 is about 497.4959106757.

Adding to 123131323 its reverse (323131321), we get a palindrome (446262644).

The spelling of 123131323 in words is "one hundred twenty-three million, one hundred thirty-one thousand, three hundred twenty-three".