131204020 has 24 divisors (see below), whose sum is σ = 276843168. Its totient is φ = 52231200.

The previous prime is 131203999. The next prime is 131204039. The reversal of 131204020 is 20402131.

It is a congruent number.

It is an unprimeable number.

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, 11326 + ... + 19765.

It is an arithmetic number, because the mean of its divisors is an integer number (11535132).

Almost surely, 2^131204020 is an apocalyptic number.

131204020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131204020 is an abundant number, since it is smaller than the sum of its proper divisors (145639148).

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

131204020 is a wasteful number, since it uses less digits than its factorization.

131204020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31311 (or 31309 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 131204020 is about 11454.4323298887. The cubic root of 131204020 is about 508.1388268355.

Adding to 131204020 its reverse (20402131), we get a palindrome (151606151).

The spelling of 131204020 in words is "one hundred thirty-one million, two hundred four thousand, twenty".