131321022 has 96 divisors (see below), whose sum is σ = 330086400. Its totient is φ = 34076160.

The previous prime is 131321017. The next prime is 131321083. The reversal of 131321022 is 220123131.

It is a junction number, because it is equal to n+sod(n) for n = 131320992 and 131321010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 376104 + ... + 376452.

It is an arithmetic number, because the mean of its divisors is an integer number (3438400).

Almost surely, 2^131321022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131321022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165043200).

131321022 is an abundant number, since it is smaller than the sum of its proper divisors (198765378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131321022 is a wasteful number, since it uses less digits than its factorization.

131321022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131321022 is about 11459.5384723819. The cubic root of 131321022 is about 508.2898272778.

Adding to 131321022 its reverse (220123131), we get a palindrome (351444153).

The spelling of 131321022 in words is "one hundred thirty-one million, three hundred twenty-one thousand, twenty-two".