131405572 has 6 divisors (see below), whose sum is σ = 229959758. Its totient is φ = 65702784.

The previous prime is 131405569. The next prime is 131405587. The reversal of 131405572 is 275504131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 130096836 + 1308736 = 11406^2 + 1144^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131405572.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16425693 + ... + 16425700.

Almost surely, 2^131405572 is an apocalyptic number.

It is an amenable number.

131405572 is a deficient number, since it is larger than the sum of its proper divisors (98554186).

131405572 is a wasteful number, since it uses less digits than its factorization.

131405572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32851397 (or 32851395 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 131405572 is about 11463.2269453239. The cubic root of 131405572 is about 508.3988900014.

The spelling of 131405572 in words is "one hundred thirty-one million, four hundred five thousand, five hundred seventy-two".