131614621 has 2 divisors, whose sum is σ = 131614622. Its totient is φ = 131614620.

The previous prime is 131614619. The next prime is 131614643. The reversal of 131614621 is 126416131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131354521 + 260100 = 11461^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 131614621 - 2¹ = 131614619 is a prime.

Together with 131614619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131314621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65807310 + 65807311.

It is an arithmetic number, because the mean of its divisors is an integer number (65807311).

Almost surely, 2^131614621 is an apocalyptic number.

It is an amenable number.

131614621 is a deficient number, since it is larger than the sum of its proper divisors (1).

131614621 is an equidigital number, since it uses as much as digits as its factorization.

131614621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 131614621 is about 11472.3415656962. The cubic root of 131614621 is about 508.6683457745.

The spelling of 131614621 in words is "one hundred thirty-one million, six hundred fourteen thousand, six hundred twenty-one".