130331020 has 24 divisors (see below), whose sum is σ = 281093904. Its totient is φ = 50723136.

The previous prime is 130330957. The next prime is 130331021. The reversal of 130331020 is 20133031.

It is not an unprimeable number, because it can be changed into a prime (130331021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87322 + ... + 88801.

It is an arithmetic number, because the mean of its divisors is an integer number (11712246).

Almost surely, 2^130331020 is an apocalyptic number.

130331020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130331020 is an abundant number, since it is smaller than the sum of its proper divisors (150762884).

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

130331020 is a wasteful number, since it uses less digits than its factorization.

130331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176169 (or 176167 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 130331020 is about 11416.2612093452. The cubic root of 130331020 is about 507.0093067447.

Adding to 130331020 its reverse (20133031), we get a palindrome (150464051).

It can be divided in two parts, 1303 and 31020, that added together give a palindrome (32323).

The spelling of 130331020 in words is "one hundred thirty million, three hundred thirty-one thousand, twenty".