131201130310021 has 4 divisors (see below), whose sum is σ = 131242297909792. Its totient is φ = 131159962710252.

The previous prime is 131201130310009. The next prime is 131201130310037. The reversal of 131201130310021 is 120013031102131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131201130310021 is a prime.

It is a super-2 number, since 2×131201130310021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201130110021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20583795105 + ... + 20583801478.

It is an arithmetic number, because the mean of its divisors is an integer number (32810574477448).

Almost surely, 2^{131201130310021} is an apocalyptic number.

It is an amenable number.

131201130310021 is a deficient number, since it is larger than the sum of its proper divisors (41167599771).

131201130310021 is an equidigital number, since it uses as much as digits as its factorization.

131201130310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41167599770.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 131201130310021 its reverse (120013031102131), we get a palindrome (251214161412152).

The spelling of 131201130310021 in words is "one hundred thirty-one trillion, two hundred one billion, one hundred thirty million, three hundred ten thousand, twenty-one".