131310331231231 has 4 divisors (see below), whose sum is σ = 131310405019512. Its totient is φ = 131310257442952.

The previous prime is 131310331231201. The next prime is 131310331231271. The reversal of 131310331231231 is 132132133013131.

It is a happy number.

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 131310331231231 - 2⁷ = 131310331231103 is a prime.

It is a super-2 number, since 2×131310331231231² (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 131310331231231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131310331231201) 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, 34157125 + ... + 37806478.

It is an arithmetic number, because the mean of its divisors is an integer number (32827601254878).

Almost surely, 2^{131310331231231} is an apocalyptic number.

131310331231231 is a deficient number, since it is larger than the sum of its proper divisors (73788281).

131310331231231 is an equidigital number, since it uses as much as digits as its factorization.

131310331231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73788280.

The product of its (nonzero) digits is 2916, while the sum is 28.

Adding to 131310331231231 its reverse (132132133013131), we get a palindrome (263442464244362).

The spelling of 131310331231231 in words is "one hundred thirty-one trillion, three hundred ten billion, three hundred thirty-one million, two hundred thirty-one thousand, two hundred thirty-one".