131284722 has 8 divisors (see below), whose sum is σ = 262569456. Its totient is φ = 43761572.

The previous prime is 131284717. The next prime is 131284729. The reversal of 131284722 is 227482131.

It is a sphenic number, since it is the product of 3 distinct primes.

131284722 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 131284722.

It is not an unprimeable number, because it can be changed into a prime (131284729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10940388 + ... + 10940399.

It is an arithmetic number, because the mean of its divisors is an integer number (32821182).

Almost surely, 2^131284722 is an apocalyptic number.

131284722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131284722 is a wasteful number, since it uses less digits than its factorization.

131284722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21880792.

The product of its digits is 5376, while the sum is 30.

The square root of 131284722 is about 11457.9545294961. The cubic root of 131284722 is about 508.2429888235.

The spelling of 131284722 in words is "one hundred thirty-one million, two hundred eighty-four thousand, seven hundred twenty-two".