131133131231 has 6 divisors (see below), whose sum is σ = 138398125032. Its totient is φ = 124231387140.

The previous prime is 131133131189. The next prime is 131133131249. The reversal of 131133131231 is 132131331131.

It is not a de Polignac number, because 131133131231 - 2⁶ = 131133131167 is a prime.

It is a super-2 number, since 2×131133131231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131133131197 and 131133131206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131133139231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 181624475 + ... + 181625196.

It is an arithmetic number, because the mean of its divisors is an integer number (23066354172).

Almost surely, 2^131133131231 is an apocalyptic number.

131133131231 is a deficient number, since it is larger than the sum of its proper divisors (7264993801).

131133131231 is an equidigital number, since it uses as much as digits as its factorization.

131133131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363249709 (or 363249690 counting only the distinct ones).

The product of its digits is 486, while the sum is 23.

Adding to 131133131231 its reverse (132131331131), we get a palindrome (263264462362).

The spelling of 131133131231 in words is "one hundred thirty-one billion, one hundred thirty-three million, one hundred thirty-one thousand, two hundred thirty-one".