131665522 has 8 divisors (see below), whose sum is σ = 197547696. Its totient is φ = 65816292.

The previous prime is 131665517. The next prime is 131665531. The reversal of 131665522 is 225566131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8833 + ... + 18475.

It is an arithmetic number, because the mean of its divisors is an integer number (24693462).

Almost surely, 2^131665522 is an apocalyptic number.

131665522 is a deficient number, since it is larger than the sum of its proper divisors (65882174).

131665522 is an equidigital number, since it uses as much as digits as its factorization.

131665522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16472.

The product of its digits is 10800, while the sum is 31.

The square root of 131665522 is about 11474.5597736907. The cubic root of 131665522 is about 508.7339119205.

The spelling of 131665522 in words is "one hundred thirty-one million, six hundred sixty-five thousand, five hundred twenty-two".