131671499 has 4 divisors (see below), whose sum is σ = 131894136. Its totient is φ = 131448864.

The previous prime is 131671457. The next prime is 131671517. The reversal of 131671499 is 994176131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131671499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131671429) 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, 110429 + ... + 111614.

It is an arithmetic number, because the mean of its divisors is an integer number (32973534).

Almost surely, 2^131671499 is an apocalyptic number.

131671499 is a deficient number, since it is larger than the sum of its proper divisors (222637).

131671499 is an equidigital number, since it uses as much as digits as its factorization.

131671499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222636.

The product of its digits is 40824, while the sum is 41.

The square root of 131671499 is about 11474.8202164566. The cubic root of 131671499 is about 508.7416098522.

The spelling of 131671499 in words is "one hundred thirty-one million, six hundred seventy-one thousand, four hundred ninety-nine".