131079222 has 80 divisors (see below), whose sum is σ = 310751232. Its totient is φ = 41232240.

The previous prime is 131079187. The next prime is 131079227. The reversal of 131079222 is 222970131.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131079227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 215643 + ... + 216249.

Almost surely, 2^131079222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131079222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155375616).

131079222 is an abundant number, since it is smaller than the sum of its proper divisors (179672010).

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

131079222 is a wasteful number, since it uses less digits than its factorization.

131079222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 131079222 is about 11448.9834483241. The cubic root of 131079222 is about 507.9776660568.

The spelling of 131079222 in words is "one hundred thirty-one million, seventy-nine thousand, two hundred twenty-two".