123323031 has 12 divisors (see below), whose sum is σ = 191836008. Its totient is φ = 75891024.

The previous prime is 123323027. The next prime is 123323041. The reversal of 123323031 is 130323321.

It is not a de Polignac number, because 123323031 - 2² = 123323027 is a prime.

It is a super-2 number, since 2×123323031² = 30417139950053922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123322995 and 123323013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123323041) 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, 526905 + ... + 527138.

It is an arithmetic number, because the mean of its divisors is an integer number (15986334).

Almost surely, 2^123323031 is an apocalyptic number.

123323031 is a deficient number, since it is larger than the sum of its proper divisors (68512977).

123323031 is a wasteful number, since it uses less digits than its factorization.

123323031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054062 (or 1054059 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 123323031 is about 11105.0903193085. The cubic root of 123323031 is about 497.7539671132.

Adding to 123323031 its reverse (130323321), we get a palindrome (253646352).

The spelling of 123323031 in words is "one hundred twenty-three million, three hundred twenty-three thousand, thirty-one".