131321102021 has 8 divisors (see below), whose sum is σ = 131463281664. Its totient is φ = 131179001040.

The previous prime is 131321102009. The next prime is 131321102039. The reversal of 131321102021 is 120201123131.

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 131321102021 - 2⁶ = 131321101957 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 (131321102041) 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, 3689516 + ... + 3724938.

It is an arithmetic number, because the mean of its divisors is an integer number (16432910208).

Almost surely, 2^131321102021 is an apocalyptic number.

It is an amenable number.

131321102021 is a deficient number, since it is larger than the sum of its proper divisors (142179643).

131321102021 is a wasteful number, since it uses less digits than its factorization.

131321102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39331.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131321102021 its reverse (120201123131), we get a palindrome (251522225152).

The spelling of 131321102021 in words is "one hundred thirty-one billion, three hundred twenty-one million, one hundred two thousand, twenty-one".