123200031 has 8 divisors (see below), whose sum is σ = 168087040. Its totient is φ = 80223192.

The previous prime is 123200023. The next prime is 123200041. The reversal of 123200031 is 130002321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123200031 - 2³ = 123200023 is a prime.

It is a super-2 number, since 2×123200031² = 30356495276801922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123200041) 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 7 ways as a sum of consecutive naturals, for example, 477391 + ... + 477648.

It is an arithmetic number, because the mean of its divisors is an integer number (21010880).

Almost surely, 2^123200031 is an apocalyptic number.

123200031 is a deficient number, since it is larger than the sum of its proper divisors (44887009).

123200031 is an equidigital number, since it uses as much as digits as its factorization.

123200031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955085.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 123200031 is about 11099.5509368623. The cubic root of 123200031 is about 497.5884286808.

Adding to 123200031 its reverse (130002321), we get a palindrome (253202352).

The spelling of 123200031 in words is "one hundred twenty-three million, two hundred thousand, thirty-one".