131310020 has 12 divisors (see below), whose sum is σ = 275751084. Its totient is φ = 52524000.

The previous prime is 131309993. The next prime is 131310043. The reversal of 131310020 is 20013131.

It can be written as a sum of positive squares in 2 ways, for example, as 94051204 + 37258816 = 9698^2 + 6104^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131309983 and 131310010.

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, 3282731 + ... + 3282770.

It is an arithmetic number, because the mean of its divisors is an integer number (22979257).

Almost surely, 2^131310020 is an apocalyptic number.

131310020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131310020 is an abundant number, since it is smaller than the sum of its proper divisors (144441064).

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

131310020 is a wasteful number, since it uses less digits than its factorization.

131310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6565510 (or 6565508 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 131310020 is about 11459.0584255427. The cubic root of 131310020 is about 508.2756321379.

Adding to 131310020 its reverse (20013131), we get a palindrome (151323151).

The spelling of 131310020 in words is "one hundred thirty-one million, three hundred ten thousand, twenty".