130531578 has 16 divisors (see below), whose sum is σ = 272414016. Its totient is φ = 41618720.

The previous prime is 130531561. The next prime is 130531579. The reversal of 130531578 is 875135031.

It is not an unprimeable number, because it can be changed into a prime (130531579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472803 + ... + 473078.

It is an arithmetic number, because the mean of its divisors is an integer number (17025876).

Almost surely, 2^130531578 is an apocalyptic number.

130531578 is an abundant number, since it is smaller than the sum of its proper divisors (141882438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130531578 is a wasteful number, since it uses less digits than its factorization.

130531578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945909.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 130531578 is about 11425.0417067072. The cubic root of 130531578 is about 507.2692414309.

The spelling of 130531578 in words is "one hundred thirty million, five hundred thirty-one thousand, five hundred seventy-eight".