131489523 has 24 divisors (see below), whose sum is σ = 208143936. Its totient is φ = 79326000.

The previous prime is 131489521. The next prime is 131489573. The reversal of 131489523 is 325984131.

It is not a de Polignac number, because 131489523 - 2¹ = 131489521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131489521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19548 + ... + 25398.

It is an arithmetic number, because the mean of its divisors is an integer number (8672664).

Almost surely, 2^131489523 is an apocalyptic number.

131489523 is a deficient number, since it is larger than the sum of its proper divisors (76654413).

131489523 is a wasteful number, since it uses less digits than its factorization.

131489523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6095 (or 6092 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 131489523 is about 11466.8881131718. Note that the first 3 decimals coincide. The cubic root of 131489523 is about 508.5071337861.

The spelling of 131489523 in words is "one hundred thirty-one million, four hundred eighty-nine thousand, five hundred twenty-three".