131289867 has 24 divisors (see below), whose sum is σ = 206069760. Its totient is φ = 80241840.

The previous prime is 131289857. The next prime is 131289871. The reversal of 131289867 is 768982131.

It is not a de Polignac number, because 131289867 - 2⁸ = 131289611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131289857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7083 + ... + 17684.

It is an arithmetic number, because the mean of its divisors is an integer number (8586240).

Almost surely, 2^131289867 is an apocalyptic number.

131289867 is a deficient number, since it is larger than the sum of its proper divisors (74779893).

131289867 is a wasteful number, since it uses less digits than its factorization.

131289867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24823 (or 24820 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 131289867 is about 11458.1790438097. The cubic root of 131289867 is about 508.2496280221.

The spelling of 131289867 in words is "one hundred thirty-one million, two hundred eighty-nine thousand, eight hundred sixty-seven".