131310524164621 has 4 divisors (see below), whose sum is σ = 131325776876700. Its totient is φ = 131295271452544.

The previous prime is 131310524164597. The next prime is 131310524164711. The reversal of 131310524164621 is 126461425013131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80856693441225 + 50453830723396 = 8992035^2 + 7103086^2 .

It is a cyclic number.

It is not a de Polignac number, because 131310524164621 - 2¹³ = 131310524156429 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 (131310524162621) 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, 7626343126 + ... + 7626360343.

It is an arithmetic number, because the mean of its divisors is an integer number (32831444219175).

Almost surely, 2^{131310524164621} is an apocalyptic number.

It is an amenable number.

131310524164621 is a deficient number, since it is larger than the sum of its proper divisors (15252712079).

131310524164621 is an equidigital number, since it uses as much as digits as its factorization.

131310524164621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15252712078.

The product of its (nonzero) digits is 103680, while the sum is 40.

Adding to 131310524164621 its reverse (126461425013131), we get a palindrome (257771949177752).

The spelling of 131310524164621 in words is "one hundred thirty-one trillion, three hundred ten billion, five hundred twenty-four million, one hundred sixty-four thousand, six hundred twenty-one".