131303113000021 has 8 divisors (see below), whose sum is σ = 139164612292440. Its totient is φ = 123456923347968.

The previous prime is 131303113000019. The next prime is 131303113000063. The reversal of 131303113000021 is 120000311303131.

It can be written as a sum of positive squares in 4 ways, for example, as 40476761758225 + 90826351241796 = 6362135^2 + 9530286^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131303113000021 - 2¹ = 131303113000019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131303113000091) 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, 3827392426 + ... + 3827426731.

It is an arithmetic number, because the mean of its divisors is an integer number (17395576536555).

Almost surely, 2^{131303113000021} is an apocalyptic number.

It is an amenable number.

131303113000021 is a deficient number, since it is larger than the sum of its proper divisors (7861499292419).

131303113000021 is a wasteful number, since it uses less digits than its factorization.

131303113000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7654820183.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 131303113000021 its reverse (120000311303131), we get a palindrome (251303424303152).

The spelling of 131303113000021 in words is "one hundred thirty-one trillion, three hundred three billion, one hundred thirteen million, twenty-one", and thus it is an aban number.