131323113121231 has 8 divisors (see below), whose sum is σ = 133129782064944. Its totient is φ = 129525685451520.

The previous prime is 131323113121171. The next prime is 131323113121259. The reversal of 131323113121231 is 132121311323131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131323113121231 - 2²³ = 131323104732623 is a prime.

It is a super-2 number, since 2×131323113121231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131323113121231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131323113121631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2310289885 + ... + 2310346726.

It is an arithmetic number, because the mean of its divisors is an integer number (16641222758118).

Almost surely, 2^{131323113121231} is an apocalyptic number.

131323113121231 is a deficient number, since it is larger than the sum of its proper divisors (1806668943713).

131323113121231 is an equidigital number, since it uses as much as digits as its factorization.

131323113121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620637001.

The product of its digits is 1944, while the sum is 28.

Adding to 131323113121231 its reverse (132121311323131), we get a palindrome (263444424444362).

The spelling of 131323113121231 in words is "one hundred thirty-one trillion, three hundred twenty-three billion, one hundred thirteen million, one hundred twenty-one thousand, two hundred thirty-one".