131022 has 24 divisors (see below), whose sum is σ = 294840. Its totient is φ = 42000.

The previous prime is 131011. The next prime is 131023. The reversal of 131022 is 220131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 130995 and 131013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131023) by changing a digit.

131022 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 397 + ... + 647.

It is an arithmetic number, because the mean of its divisors is an integer number (12285).

2¹³¹⁰²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147420).

131022 is an abundant number, since it is smaller than the sum of its proper divisors (163818).

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

131022 is a wasteful number, since it uses less digits than its factorization.

131022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 131022 is about 361.9696119842. The cubic root of 131022 is about 50.7903736901.

Adding to 131022 its reverse (220131), we get a palindrome (351153).

It can be divided in two parts, 13 and 1022, that added together give a triangular number (1035 = T₄₅).

The spelling of 131022 in words is "one hundred thirty-one thousand, twenty-two".