130011988 has 24 divisors (see below), whose sum is σ = 249215400. Its totient is φ = 59071488.

The previous prime is 130011983. The next prime is 130011989. The reversal of 130011988 is 889110031.

130011988 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25522704 + 104489284 = 5052^2 + 10222^2 .

130011988 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130011983) 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, 30993 + ... + 34936.

It is an arithmetic number, because the mean of its divisors is an integer number (10383975).

Almost surely, 2^130011988 is an apocalyptic number.

It is an amenable number.

130011988 is a deficient number, since it is larger than the sum of its proper divisors (119203412).

130011988 is a wasteful number, since it uses less digits than its factorization.

130011988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65979 (or 65977 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 130011988 is about 11402.2799474491. The cubic root of 130011988 is about 506.5952729122.

The spelling of 130011988 in words is "one hundred thirty million, eleven thousand, nine hundred eighty-eight".