131201130323021 has 24 divisors (see below), whose sum is σ = 152750519171136. Its totient is φ = 111373730536320.

The previous prime is 131201130323009. The next prime is 131201130323027. The reversal of 131201130323021 is 120323031102131.

It is not a de Polignac number, because 131201130323021 - 2²² = 131201126128717 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 (131201130323027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18733841 + ... + 24766086.

It is an arithmetic number, because the mean of its divisors is an integer number (6364604965464).

Almost surely, 2^{131201130323021} is an apocalyptic number.

131201130323021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131201130323021 is a deficient number, since it is larger than the sum of its proper divisors (21549388848115).

131201130323021 is a wasteful number, since it uses less digits than its factorization.

131201130323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43500209 (or 43500082 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 131201130323021 its reverse (120323031102131), we get a palindrome (251524161425152).

The spelling of 131201130323021 in words is "one hundred thirty-one trillion, two hundred one billion, one hundred thirty million, three hundred twenty-three thousand, twenty-one".