131671497 has 4 divisors (see below), whose sum is σ = 175562000. Its totient is φ = 87780996.

The previous prime is 131671457. The next prime is 131671517. The reversal of 131671497 is 794176131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 131671497 - 2⁷ = 131671369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131671427) 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, 21945247 + ... + 21945252.

It is an arithmetic number, because the mean of its divisors is an integer number (43890500).

Almost surely, 2^131671497 is an apocalyptic number.

It is an amenable number.

131671497 is a deficient number, since it is larger than the sum of its proper divisors (43890503).

131671497 is an equidigital number, since it uses as much as digits as its factorization.

131671497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43890502.

The product of its digits is 31752, while the sum is 39.

The square root of 131671497 is about 11474.8201293092. The cubic root of 131671497 is about 508.7416072764.

The spelling of 131671497 in words is "one hundred thirty-one million, six hundred seventy-one thousand, four hundred ninety-seven".