130996521 has 20 divisors (see below), whose sum is σ = 196006932. Its totient is φ = 87187968.

The previous prime is 130996513. The next prime is 130996531. The reversal of 130996521 is 125699031.

It can be written as a sum of positive squares in 2 ways, for example, as 97298496 + 33698025 = 9864^2 + 5805^2 .

It is not a de Polignac number, because 130996521 - 2³ = 130996513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130996511) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 76345 + ... + 78041.

Almost surely, 2^130996521 is an apocalyptic number.

It is an amenable number.

130996521 is a deficient number, since it is larger than the sum of its proper divisors (65010411).

130996521 is an equidigital number, since it uses as much as digits as its factorization.

130996521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662 (or 2653 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 130996521 is about 11445.3711604299. The cubic root of 130996521 is about 507.8708118493.

The spelling of 130996521 in words is "one hundred thirty million, nine hundred ninety-six thousand, five hundred twenty-one".