131103331435021 has 12 divisors (see below), whose sum is σ = 144345090695932. Its totient is φ = 118986535800000.

The previous prime is 131103331435009. The next prime is 131103331435049. The reversal of 131103331435021 is 120534133301131.

It can be written as a sum of positive squares in 2 ways, for example, as 90766682394025 + 40336649040996 = 9527155^2 + 6351114^2 .

It is not a de Polignac number, because 131103331435021 - 2¹⁹ = 131103330910733 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 (131103331435061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 901340430 + ... + 901485871.

Almost surely, 2^{131103331435021} is an apocalyptic number.

131103331435021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131103331435021 is a deficient number, since it is larger than the sum of its proper divisors (13241759260911).

131103331435021 is a wasteful number, since it uses less digits than its factorization.

131103331435021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802826924 (or 1802826913 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 131103331435021 its reverse (120534133301131), we get a palindrome (251637464736152).

The spelling of 131103331435021 in words is "one hundred thirty-one trillion, one hundred three billion, three hundred thirty-one million, four hundred thirty-five thousand, twenty-one".