131056451623 has 4 divisors (see below), whose sum is σ = 135575639640. Its totient is φ = 126537263608.

The previous prime is 131056451621. The next prime is 131056451641. The reversal of 131056451623 is 326154650131.

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 131056451623 - 2¹ = 131056451621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131056451621) 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, 2259593965 + ... + 2259594022.

It is an arithmetic number, because the mean of its divisors is an integer number (33893909910).

Almost surely, 2^131056451623 is an apocalyptic number.

131056451623 is a deficient number, since it is larger than the sum of its proper divisors (4519188017).

131056451623 is an equidigital number, since it uses as much as digits as its factorization.

131056451623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4519188016.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 131056451623 in words is "one hundred thirty-one billion, fifty-six million, four hundred fifty-one thousand, six hundred twenty-three".