123101322031 has 16 divisors (see below), whose sum is σ = 129971318400. Its totient is φ = 116270957088.

The previous prime is 123101322007. The next prime is 123101322041. The reversal of 123101322031 is 130223101321.

It is a cyclic number.

It is not a de Polignac number, because 123101322031 - 2²³ = 123092933423 is a prime.

It is a super-2 number, since 2×123101322031² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123101322041) 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, 9182025 + ... + 9195421.

It is an arithmetic number, because the mean of its divisors is an integer number (8123207400).

Almost surely, 2^123101322031 is an apocalyptic number.

123101322031 is a deficient number, since it is larger than the sum of its proper divisors (6869996369).

123101322031 is a wasteful number, since it uses less digits than its factorization.

123101322031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14838.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123101322031 its reverse (130223101321), we get a palindrome (253324423352).

The spelling of 123101322031 in words is "one hundred twenty-three billion, one hundred one million, three hundred twenty-two thousand, thirty-one".