131022320022 has 48 divisors (see below), whose sum is σ = 317242532880. Its totient is φ = 38735347200.

The previous prime is 131022320017. The next prime is 131022320029. The reversal of 131022320022 is 220023220131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 131022319977 and 131022320004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131022320029) 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, 8061747 + ... + 8077982.

It is an arithmetic number, because the mean of its divisors is an integer number (6609219435).

Almost surely, 2^131022320022 is an apocalyptic number.

131022320022 is an abundant number, since it is smaller than the sum of its proper divisors (186220212858).

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

131022320022 is a wasteful number, since it uses less digits than its factorization.

131022320022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16139789 (or 16139786 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 131022320022 its reverse (220023220131), we get a palindrome (351045540153).

The spelling of 131022320022 in words is "one hundred thirty-one billion, twenty-two million, three hundred twenty thousand, twenty-two".