131783572 has 6 divisors (see below), whose sum is σ = 230621258. Its totient is φ = 65891784.

The previous prime is 131783549. The next prime is 131783591. The reversal of 131783572 is 275387131.

It can be written as a sum of positive squares in only one way, i.e., 123965956 + 7817616 = 11134^2 + 2796^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16472943 + ... + 16472950.

Almost surely, 2^131783572 is an apocalyptic number.

It is an amenable number.

131783572 is a deficient number, since it is larger than the sum of its proper divisors (98837686).

131783572 is a wasteful number, since it uses less digits than its factorization.

131783572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32945897 (or 32945895 counting only the distinct ones).

The product of its digits is 35280, while the sum is 37.

The square root of 131783572 is about 11479.7026093885. The cubic root of 131783572 is about 508.8859084285.

It can be divided in two parts, 131783 and 572, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 131783572 in words is "one hundred thirty-one million, seven hundred eighty-three thousand, five hundred seventy-two".