130786531 has 2 divisors, whose sum is σ = 130786532. Its totient is φ = 130786530.

The previous prime is 130786517. The next prime is 130786541. The reversal of 130786531 is 135687031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 130786531 - 2¹¹ = 130784483 is a prime.

It is a super-2 number, since 2×130786531² = 34210233382027922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (130786511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65393265 + 65393266.

It is an arithmetic number, because the mean of its divisors is an integer number (65393266).

Almost surely, 2^130786531 is an apocalyptic number.

130786531 is a deficient number, since it is larger than the sum of its proper divisors (1).

130786531 is an equidigital number, since it uses as much as digits as its factorization.

130786531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 130786531 is about 11436.1939035677. The cubic root of 130786531 is about 507.5992910793.

The spelling of 130786531 in words is "one hundred thirty million, seven hundred eighty-six thousand, five hundred thirty-one".