131144022 has 80 divisors (see below), whose sum is σ = 312203232. Its totient is φ = 41057280.

The previous prime is 131144017. The next prime is 131144047. The reversal of 131144022 is 220441131.

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 = 131143986 and 131144004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 226998 + ... + 227574.

Almost surely, 2^131144022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131144022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156101616).

131144022 is an abundant number, since it is smaller than the sum of its proper divisors (181059210).

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

131144022 is a wasteful number, since it uses less digits than its factorization.

131144022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 131144022 is about 11451.8130442302. The cubic root of 131144022 is about 508.0613597943.

Adding to 131144022 its reverse (220441131), we get a palindrome (351585153).

The spelling of 131144022 in words is "one hundred thirty-one million, one hundred forty-four thousand, twenty-two".