130517531 has 4 divisors (see below), whose sum is σ = 130669632. Its totient is φ = 130365432.

The previous prime is 130517447. The next prime is 130517561. The reversal of 130517531 is 135715031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135715031 = 3833 ⋅35407.

It is a cyclic number.

It is not a de Polignac number, because 130517531 - 2²² = 126323227 is a prime.

It is a super-2 number, since 2×130517531² = 34069651796671922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130517531.

It is not an unprimeable number, because it can be changed into a prime (130517561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74756 + ... + 76481.

It is an arithmetic number, because the mean of its divisors is an integer number (32667408).

Almost surely, 2^130517531 is an apocalyptic number.

130517531 is a deficient number, since it is larger than the sum of its proper divisors (152101).

130517531 is an equidigital number, since it uses as much as digits as its factorization.

130517531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152100.

The product of its (nonzero) digits is 1575, while the sum is 26.

The square root of 130517531 is about 11424.4269440528. The cubic root of 130517531 is about 507.2510443868.

The spelling of 130517531 in words is "one hundred thirty million, five hundred seventeen thousand, five hundred thirty-one".