131314621 has 2 divisors, whose sum is σ = 131314622. Its totient is φ = 131314620.

The previous prime is 131314607. The next prime is 131314657. The reversal of 131314621 is 126413131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79905721 + 51408900 = 8939^2 + 7170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131314621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131314592 and 131314601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131314321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65657310 + 65657311.

It is an arithmetic number, because the mean of its divisors is an integer number (65657311).

Almost surely, 2^131314621 is an apocalyptic number.

It is an amenable number.

131314621 is a deficient number, since it is larger than the sum of its proper divisors (1).

131314621 is an equidigital number, since it uses as much as digits as its factorization.

131314621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 131314621 is about 11459.2591819890. The cubic root of 131314621 is about 508.2815685949.

Adding to 131314621 its reverse (126413131), we get a palindrome (257727752).

The spelling of 131314621 in words is "one hundred thirty-one million, three hundred fourteen thousand, six hundred twenty-one".