131130233231 has 2 divisors, whose sum is σ = 131130233232. Its totient is φ = 131130233230.

The previous prime is 131130233207. The next prime is 131130233243. The reversal of 131130233231 is 132332031131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131130233231 is a prime.

It is a super-2 number, since 2×131130233231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131130233197 and 131130233206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131130233281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65565116615 + 65565116616.

It is an arithmetic number, because the mean of its divisors is an integer number (65565116616).

Almost surely, 2^131130233231 is an apocalyptic number.

131130233231 is a deficient number, since it is larger than the sum of its proper divisors (1).

131130233231 is an equidigital number, since it uses as much as digits as its factorization.

131130233231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 131130233231 its reverse (132332031131), we get a palindrome (263462264362).

The spelling of 131130233231 in words is "one hundred thirty-one billion, one hundred thirty million, two hundred thirty-three thousand, two hundred thirty-one".