123131031113 has 8 divisors (see below), whose sum is σ = 125224819200. Its totient is φ = 121050622368.

The previous prime is 123131031109. The next prime is 123131031143. The reversal of 123131031113 is 311130131321.

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

It is a cyclic number.

It is not a de Polignac number, because 123131031113 - 2² = 123131031109 is a prime.

It is a super-2 number, since 2×123131031113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123131031143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3326273 + ... + 3363086.

It is an arithmetic number, because the mean of its divisors is an integer number (15653102400).

Almost surely, 2^123131031113 is an apocalyptic number.

It is an amenable number.

123131031113 is a deficient number, since it is larger than the sum of its proper divisors (2093788087).

123131031113 is an equidigital number, since it uses as much as digits as its factorization.

123131031113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6689671.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 123131031113 its reverse (311130131321), we get a palindrome (434261162434).

The spelling of 123131031113 in words is "one hundred twenty-three billion, one hundred thirty-one million, thirty-one thousand, one hundred thirteen".