131202020 has 24 divisors (see below), whose sum is σ = 278623800. Its totient is φ = 51890432.

The previous prime is 131202007. The next prime is 131202041. The reversal of 131202020 is 20202131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3602404 + 127599616 = 1898^2 + 11296^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131201992 and 131202010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35075 + ... + 38634.

It is an arithmetic number, because the mean of its divisors is an integer number (11609325).

Almost surely, 2^131202020 is an apocalyptic number.

131202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131202020 is an abundant number, since it is smaller than the sum of its proper divisors (147421780).

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

131202020 is a wasteful number, since it uses less digits than its factorization.

131202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73807 (or 73805 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 131202020 is about 11454.3450271065. The cubic root of 131202020 is about 508.1362448953.

Adding to 131202020 its reverse (20202131), we get a palindrome (151404151).

The spelling of 131202020 in words is "one hundred thirty-one million, two hundred two thousand, twenty".