130970521 has 12 divisors (see below), whose sum is σ = 144278932. Its totient is φ = 118800000.

The previous prime is 130970519. The next prime is 130970527. The reversal of 130970521 is 125079031.

It can be written as a sum of positive squares in 2 ways, for example, as 62726400 + 68244121 = 7920^2 + 8261^2 .

It is not a de Polignac number, because 130970521 - 2¹ = 130970519 is a prime.

It is a super-2 number, since 2×130970521² = 34306554742022882, 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 130970521.

It is not an unprimeable number, because it can be changed into a prime (130970527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71821 + ... + 73621.

Almost surely, 2^130970521 is an apocalyptic number.

130970521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130970521 is a deficient number, since it is larger than the sum of its proper divisors (13308411).

130970521 is a wasteful number, since it uses less digits than its factorization.

130970521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2413 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 130970521 is about 11444.2352737088. The cubic root of 130970521 is about 507.8372091380.

The spelling of 130970521 in words is "one hundred thirty million, nine hundred seventy thousand, five hundred twenty-one".