123311121201031 has 8 divisors (see below), whose sum is σ = 128950384619520. Its totient is φ = 117695016976152.

The previous prime is 123311121201017. The next prime is 123311121201043. The reversal of 123311121201031 is 130102121113321.

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-123311121201031 is a prime.

It is a super-2 number, since 2×123311121201031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123311121200993 and 123311121201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311121201011) 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, 5789787511 + ... + 5789808808.

It is an arithmetic number, because the mean of its divisors is an integer number (16118798077440).

Almost surely, 2^{123311121201031} is an apocalyptic number.

123311121201031 is a deficient number, since it is larger than the sum of its proper divisors (5639263418489).

123311121201031 is a wasteful number, since it uses less digits than its factorization.

123311121201031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11579596805.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 123311121201031 its reverse (130102121113321), we get a palindrome (253413242314352).

The spelling of 123311121201031 in words is "one hundred twenty-three trillion, three hundred eleven billion, one hundred twenty-one million, two hundred one thousand, thirty-one".