131402124020 has 12 divisors (see below), whose sum is σ = 275944460484. Its totient is φ = 52560849600.

The previous prime is 131402123969. The next prime is 131402124047. The reversal of 131402124020 is 20421204131.

It can be written as a sum of positive squares in 2 ways, for example, as 87353349136 + 44048774884 = 295556^2 + 209878^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 6570106201 = 131402124020 / (1 + 3 + 1 + 4 + 0 + 2 + 1 + 2 + 4 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 131402123983 and 131402124001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3285053081 + ... + 3285053120.

It is an arithmetic number, because the mean of its divisors is an integer number (22995371707).

Almost surely, 2^131402124020 is an apocalyptic number.

131402124020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131402124020 is an abundant number, since it is smaller than the sum of its proper divisors (144542336464).

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

131402124020 is a wasteful number, since it uses less digits than its factorization.

131402124020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6570106210 (or 6570106208 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 131402124020 its reverse (20421204131), we get a palindrome (151823328151).

The spelling of 131402124020 in words is "one hundred thirty-one billion, four hundred two million, one hundred twenty-four thousand, twenty".