130636243 has 2 divisors, whose sum is σ = 130636244. Its totient is φ = 130636242.

The previous prime is 130636199. The next prime is 130636309. The reversal of 130636243 is 342636031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 130636243 - 2⁹ = 130635731 is a prime.

It is not a weakly prime, because it can be changed into another prime (130636543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65318121 + 65318122.

It is an arithmetic number, because the mean of its divisors is an integer number (65318122).

Almost surely, 2^130636243 is an apocalyptic number.

130636243 is a deficient number, since it is larger than the sum of its proper divisors (1).

130636243 is an equidigital number, since it uses as much as digits as its factorization.

130636243 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 28.

The square root of 130636243 is about 11429.6212973134. The cubic root of 130636243 is about 507.4047875610.

It can be divided in two parts, 13063 and 6243, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 130636243 in words is "one hundred thirty million, six hundred thirty-six thousand, two hundred forty-three".