131989252 has 6 divisors (see below), whose sum is σ = 230981198. Its totient is φ = 65994624.

The previous prime is 131989243. The next prime is 131989259. The reversal of 131989252 is 252989131.

It can be written as a sum of positive squares in only one way, i.e., 74926336 + 57062916 = 8656^2 + 7554^2 .

It is not an unprimeable number, because it can be changed into a prime (131989259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16498653 + ... + 16498660.

Almost surely, 2^131989252 is an apocalyptic number.

It is an amenable number.

131989252 is a deficient number, since it is larger than the sum of its proper divisors (98991946).

131989252 is a wasteful number, since it uses less digits than its factorization.

131989252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32997317 (or 32997315 counting only the distinct ones).

The product of its digits is 38880, while the sum is 40.

The square root of 131989252 is about 11488.6575368926. The cubic root of 131989252 is about 509.1505171507.

The spelling of 131989252 in words is "one hundred thirty-one million, nine hundred eighty-nine thousand, two hundred fifty-two".