130156531 has 4 divisors (see below), whose sum is σ = 130193064. Its totient is φ = 130120000.

The previous prime is 130156487. The next prime is 130156541. The reversal of 130156531 is 135651031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135651031 = 7577 ⋅17903.

It is a cyclic number.

It is not a de Polignac number, because 130156531 - 2¹¹ = 130154483 is a prime.

It is a super-2 number, since 2×130156531² = 33881445123907922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130156496 and 130156505.

It is not an unprimeable number, because it can be changed into a prime (130156541) 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, 12265 + ... + 20266.

It is an arithmetic number, because the mean of its divisors is an integer number (32548266).

Almost surely, 2^130156531 is an apocalyptic number.

130156531 is a deficient number, since it is larger than the sum of its proper divisors (36533).

130156531 is an equidigital number, since it uses as much as digits as its factorization.

130156531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36532.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 130156531 is about 11408.6165243644. The cubic root of 130156531 is about 506.7829419677.

The spelling of 130156531 in words is "one hundred thirty million, one hundred fifty-six thousand, five hundred thirty-one".