131310446621 has 2 divisors, whose sum is σ = 131310446622. Its totient is φ = 131310446620.

The previous prime is 131310446611. The next prime is 131310446651. The reversal of 131310446621 is 126644013131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129603600025 + 1706846596 = 360005^2 + 41314^2 .

It is an emirp because it is prime and its reverse (126644013131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131310446621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131310446611) 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, 65655223310 + 65655223311.

It is an arithmetic number, because the mean of its divisors is an integer number (65655223311).

Almost surely, 2^131310446621 is an apocalyptic number.

It is an amenable number.

131310446621 is a deficient number, since it is larger than the sum of its proper divisors (1).

131310446621 is an equidigital number, since it uses as much as digits as its factorization.

131310446621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 131310446621 its reverse (126644013131), we get a palindrome (257954459752).

The spelling of 131310446621 in words is "one hundred thirty-one billion, three hundred ten million, four hundred forty-six thousand, six hundred twenty-one".