130431649 has 2 divisors, whose sum is σ = 130431650. Its totient is φ = 130431648.

The previous prime is 130431641. The next prime is 130431659. The reversal of 130431649 is 946134031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119508624 + 10923025 = 10932^2 + 3305^2 .

It is a cyclic number.

It is not a de Polignac number, because 130431649 - 2³ = 130431641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130431649.

It is not a weakly prime, because it can be changed into another prime (130431641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65215824 + 65215825.

It is an arithmetic number, because the mean of its divisors is an integer number (65215825).

Almost surely, 2^130431649 is an apocalyptic number.

It is an amenable number.

130431649 is a deficient number, since it is larger than the sum of its proper divisors (1).

130431649 is an equidigital number, since it uses as much as digits as its factorization.

130431649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 130431649 is about 11420.6676249683. The cubic root of 130431649 is about 507.1397610149.

The spelling of 130431649 in words is "one hundred thirty million, four hundred thirty-one thousand, six hundred forty-nine".