131022334021 has 4 divisors (see below), whose sum is σ = 131701206412. Its totient is φ = 130343461632.

The previous prime is 131022333997. The next prime is 131022334039. The reversal of 131022334021 is 120433220131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29143269796 + 101879064225 = 170714^2 + 319185^2 .

It is a cyclic number.

It is not a de Polignac number, because 131022334021 - 2¹⁵ = 131022301253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131022333983 and 131022334001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131022334721) 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, 339435906 + ... + 339436291.

It is an arithmetic number, because the mean of its divisors is an integer number (32925301603).

Almost surely, 2^131022334021 is an apocalyptic number.

It is an amenable number.

131022334021 is a deficient number, since it is larger than the sum of its proper divisors (678872391).

131022334021 is an equidigital number, since it uses as much as digits as its factorization.

131022334021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678872390.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 131022334021 its reverse (120433220131), we get a palindrome (251455554152).

The spelling of 131022334021 in words is "one hundred thirty-one billion, twenty-two million, three hundred thirty-four thousand, twenty-one".