130631994 has 32 divisors (see below), whose sum is σ = 290666880. Its totient is φ = 43488000.

The previous prime is 130631993. The next prime is 130632001. The reversal of 130631994 is 499136031.

130631994 is a `hidden beast` number, since 13 + 0 + 631 + 9 + 9 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (130631993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80794 + ... + 82394.

It is an arithmetic number, because the mean of its divisors is an integer number (9083340).

Almost surely, 2^130631994 is an apocalyptic number.

130631994 is an abundant number, since it is smaller than the sum of its proper divisors (160034886).

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

130631994 is a wasteful number, since it uses less digits than its factorization.

130631994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123 (or 3117 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 130631994 is about 11429.4354191272. The cubic root of 130631994 is about 507.3992863150.

The spelling of 130631994 in words is "one hundred thirty million, six hundred thirty-one thousand, nine hundred ninety-four".