1231342321023 has 16 divisors (see below), whose sum is σ = 1883056358400. Its totient is φ = 794414400120.

The previous prime is 1231342321021. The next prime is 1231342321037. The reversal of 1231342321023 is 3201232431321.

1231342321023 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 3 + 423 + 210 + 23 = 666.

It is not a de Polignac number, because 1231342321023 - 2¹ = 1231342321021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231342321021) 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, 735568053 + ... + 735569726.

It is an arithmetic number, because the mean of its divisors is an integer number (117691022400).

Almost surely, 2^{1231342321023} is an apocalyptic number.

1231342321023 is a deficient number, since it is larger than the sum of its proper divisors (651714037377).

1231342321023 is a wasteful number, since it uses less digits than its factorization.

1231342321023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471137819 (or 1471137813 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 1231342321023 its reverse (3201232431321), we get a palindrome (4432574752344).

The spelling of 1231342321023 in words is "one trillion, two hundred thirty-one billion, three hundred forty-two million, three hundred twenty-one thousand, twenty-three".