131313021340423 has 4 divisors (see below), whose sum is σ = 141414022982008. Its totient is φ = 121212019698840.

The previous prime is 131313021340343. The next prime is 131313021340427. The reversal of 131313021340423 is 324043120313131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131313021340423 - 2²⁹ = 131312484469511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131313021340427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5050500820773 + ... + 5050500820798.

It is an arithmetic number, because the mean of its divisors is an integer number (35353505745502).

Almost surely, 2^{131313021340423} is an apocalyptic number.

131313021340423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131313021340423 is a deficient number, since it is larger than the sum of its proper divisors (10101001641585).

131313021340423 is a wasteful number, since it uses less digits than its factorization.

131313021340423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10101001641584.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 131313021340423 its reverse (324043120313131), we get a palindrome (455356141653554).

The spelling of 131313021340423 in words is "one hundred thirty-one trillion, three hundred thirteen billion, twenty-one million, three hundred forty thousand, four hundred twenty-three".