131313323231 has 8 divisors (see below), whose sum is σ = 133630101024. Its totient is φ = 129010544640.

The previous prime is 131313323177. The next prime is 131313323233. The reversal of 131313323231 is 132323313131.

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-131313323231 is a prime.

It is a super-2 number, since 2×131313323231² (a number of 23 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 131313323231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131313323233) 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, 3480875 + ... + 3518396.

It is an arithmetic number, because the mean of its divisors is an integer number (16703762628).

Almost surely, 2^131313323231 is an apocalyptic number.

131313323231 is a deficient number, since it is larger than the sum of its proper divisors (2316777793).

131313323231 is an equidigital number, since it uses as much as digits as its factorization.

131313323231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6999601.

The product of its digits is 2916, while the sum is 26.

Adding to 131313323231 its reverse (132323313131), we get a palindrome (263636636362).

The spelling of 131313323231 in words is "one hundred thirty-one billion, three hundred thirteen million, three hundred twenty-three thousand, two hundred thirty-one".