131231301111233 has 4 divisors (see below), whose sum is σ = 131240085603120. Its totient is φ = 131222516619348.

The previous prime is 131231301111223. The next prime is 131231301111259. The reversal of 131231301111233 is 332111103132131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131231301111233 - 2²⁰ = 131231300062657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131231301111223) 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, 4392223535 + ... + 4392253412.

It is an arithmetic number, because the mean of its divisors is an integer number (32810021400780).

Almost surely, 2^{131231301111233} is an apocalyptic number.

It is an amenable number.

131231301111233 is a deficient number, since it is larger than the sum of its proper divisors (8784491887).

131231301111233 is an equidigital number, since it uses as much as digits as its factorization.

131231301111233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8784491886.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 131231301111233 its reverse (332111103132131), we get a palindrome (463342404243364).

The spelling of 131231301111233 in words is "one hundred thirty-one trillion, two hundred thirty-one billion, three hundred one million, one hundred eleven thousand, two hundred thirty-three".