130636309 has 2 divisors, whose sum is σ = 130636310. Its totient is φ = 130636308.

The previous prime is 130636243. The next prime is 130636333. The reversal of 130636309 is 903636031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130302225 + 334084 = 11415^2 + 578^2 .

It is a cyclic number.

It is not a de Polignac number, because 130636309 - 2¹³ = 130628117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130636339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65318154 + 65318155.

It is an arithmetic number, because the mean of its divisors is an integer number (65318155).

Almost surely, 2^130636309 is an apocalyptic number.

It is an amenable number.

130636309 is a deficient number, since it is larger than the sum of its proper divisors (1).

130636309 is an equidigital number, since it uses as much as digits as its factorization.

130636309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 130636309 is about 11429.6241845478. The cubic root of 130636309 is about 507.4048730113.

The spelling of 130636309 in words is "one hundred thirty million, six hundred thirty-six thousand, three hundred nine".