131202002020 has 24 divisors (see below), whose sum is σ = 275970784824. Its totient is φ = 52395737856.

The previous prime is 131202002011. The next prime is 131202002083. The reversal of 131202002020 is 20200202131.

It can be written as a sum of positive squares in 4 ways, for example, as 16844405796 + 114357596224 = 129786^2 + 338168^2 .

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, 5303787 + ... + 5328466.

It is an arithmetic number, because the mean of its divisors is an integer number (11498782701).

Almost surely, 2^131202002020 is an apocalyptic number.

131202002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131202002020 is an abundant number, since it is smaller than the sum of its proper divisors (144768782804).

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

131202002020 is a wasteful number, since it uses less digits than its factorization.

131202002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10632879 (or 10632877 counting only the distinct ones).

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

Adding to 131202002020 its reverse (20200202131), we get a palindrome (151402204151).

The spelling of 131202002020 in words is "one hundred thirty-one billion, two hundred two million, two thousand, twenty".