123031431011023 has 8 divisors (see below), whose sum is σ = 123144072660000. Its totient is φ = 122918792431968.

The previous prime is 123031431010979. The next prime is 123031431011051. The reversal of 123031431011023 is 320110134130321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123031431011023 is a prime.

It is a super-2 number, since 2×123031431011023² (a number of 29 digits) 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 (123031431015023) 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, 83669353 + ... + 85127101.

It is an arithmetic number, because the mean of its divisors is an integer number (15393009082500).

Almost surely, 2^{123031431011023} is an apocalyptic number.

123031431011023 is a deficient number, since it is larger than the sum of its proper divisors (112641648977).

123031431011023 is a wasteful number, since it uses less digits than its factorization.

123031431011023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534961.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 123031431011023 its reverse (320110134130321), we get a palindrome (443141565141344).

The spelling of 123031431011023 in words is "one hundred twenty-three trillion, thirty-one billion, four hundred thirty-one million, eleven thousand, twenty-three".