131312321023 has 16 divisors (see below), whose sum is σ = 142465187200. Its totient is φ = 120310155360.

The previous prime is 131312321011. The next prime is 131312321051. The reversal of 131312321023 is 320123213131.

It is a cyclic number.

It is not a de Polignac number, because 131312321023 - 2²¹ = 131310223871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131312320985 and 131312321003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312321053) 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, 11868268 + ... + 11879326.

It is an arithmetic number, because the mean of its divisors is an integer number (8904074200).

Almost surely, 2^131312321023 is an apocalyptic number.

131312321023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131312321023 is a deficient number, since it is larger than the sum of its proper divisors (11152866177).

131312321023 is a wasteful number, since it uses less digits than its factorization.

131312321023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17782.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131312321023 its reverse (320123213131), we get a palindrome (451435534154).

The spelling of 131312321023 in words is "one hundred thirty-one billion, three hundred twelve million, three hundred twenty-one thousand, twenty-three".