131188722 has 16 divisors (see below), whose sum is σ = 299860032. Its totient is φ = 37482480.

The previous prime is 131188697. The next prime is 131188723. The reversal of 131188722 is 227881131.

It is not an unprimeable number, because it can be changed into a prime (131188723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561729 + ... + 1561812.

It is an arithmetic number, because the mean of its divisors is an integer number (18741252).

Almost surely, 2^131188722 is an apocalyptic number.

131188722 is an abundant number, since it is smaller than the sum of its proper divisors (168671310).

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

131188722 is a wasteful number, since it uses less digits than its factorization.

131188722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123553.

The product of its digits is 5376, while the sum is 33.

The square root of 131188722 is about 11453.7645339862. The cubic root of 131188722 is about 508.1190769073.

The spelling of 131188722 in words is "one hundred thirty-one million, one hundred eighty-eight thousand, seven hundred twenty-two".