130991020 has 12 divisors (see below), whose sum is σ = 275081184. Its totient is φ = 52396400.

The previous prime is 130991009. The next prime is 130991039. The reversal of 130991020 is 20199031.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3274756 + ... + 3274795.

It is an arithmetic number, because the mean of its divisors is an integer number (22923432).

Almost surely, 2^130991020 is an apocalyptic number.

130991020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130991020 is an abundant number, since it is smaller than the sum of its proper divisors (144090164).

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

130991020 is a wasteful number, since it uses less digits than its factorization.

130991020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6549560 (or 6549558 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 130991020 is about 11445.1308424150. The cubic root of 130991020 is about 507.8637026619.

It can be divided in two parts, 1309 and 91020, that added together give a palindrome (92329).

The spelling of 130991020 in words is "one hundred thirty million, nine hundred ninety-one thousand, twenty".