131403322100020 has 24 divisors (see below), whose sum is σ = 275948330470344. Its totient is φ = 52561070923776.

The previous prime is 131403322099957. The next prime is 131403322100027. The reversal of 131403322100020 is 20001223304131.

It can be written as a sum of positive squares in 4 ways, for example, as 37548535714596 + 93854786385424 = 6127686^2 + 9687868^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131403322099964 and 131403322100000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131403322100027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11915277 + ... + 20119156.

It is an arithmetic number, because the mean of its divisors is an integer number (11497847102931).

Almost surely, 2^{131403322100020} is an apocalyptic number.

131403322100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131403322100020 is an abundant number, since it is smaller than the sum of its proper divisors (144545008370324).

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

131403322100020 is a wasteful number, since it uses less digits than its factorization.

131403322100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32239539 (or 32239537 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 131403322100020 its reverse (20001223304131), we get a palindrome (151404545404151).

The spelling of 131403322100020 in words is "one hundred thirty-one trillion, four hundred three billion, three hundred twenty-two million, one hundred thousand, twenty".