131459999 has 4 divisors (see below), whose sum is σ = 143410920. Its totient is φ = 119509080.

The previous prime is 131459953. The next prime is 131460023. The reversal of 131459999 is 999954131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131459999 - 2²⁰ = 130411423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131459399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5975444 + ... + 5975465.

It is an arithmetic number, because the mean of its divisors is an integer number (35852730).

Almost surely, 2^131459999 is an apocalyptic number.

131459999 is a deficient number, since it is larger than the sum of its proper divisors (11950921).

131459999 is a wasteful number, since it uses less digits than its factorization.

131459999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11950920.

The product of its digits is 393660, while the sum is 50.

The square root of 131459999 is about 11465.6006820402. The cubic root of 131459999 is about 508.4690717208.

The spelling of 131459999 in words is "one hundred thirty-one million, four hundred fifty-nine thousand, nine hundred ninety-nine".