131602459 has 4 divisors (see below), whose sum is σ = 131861520. Its totient is φ = 131343400.

The previous prime is 131602447. The next prime is 131602463. The reversal of 131602459 is 954206131.

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 131602459 - 2²¹ = 129505307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131602459.

It is not an unprimeable number, because it can be changed into a prime (131602439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128767 + ... + 129784.

It is an arithmetic number, because the mean of its divisors is an integer number (32965380).

Almost surely, 2^131602459 is an apocalyptic number.

131602459 is a deficient number, since it is larger than the sum of its proper divisors (259061).

131602459 is an equidigital number, since it uses as much as digits as its factorization.

131602459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259060.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 131602459 is about 11471.8114960106. The cubic root of 131602459 is about 508.6526772646.

The spelling of 131602459 in words is "one hundred thirty-one million, six hundred two thousand, four hundred fifty-nine".