131623571 has 8 divisors (see below), whose sum is σ = 142766064. Its totient is φ = 120858880.

The previous prime is 131623561. The next prime is 131623601. The reversal of 131623571 is 175326131.

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

It is a cyclic number.

It is not a de Polignac number, because 131623571 - 2¹⁸ = 131361427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131623501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93725 + ... + 95118.

It is an arithmetic number, because the mean of its divisors is an integer number (17845758).

Almost surely, 2^131623571 is an apocalyptic number.

131623571 is a deficient number, since it is larger than the sum of its proper divisors (11142493).

131623571 is a wasteful number, since it uses less digits than its factorization.

131623571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188901.

The product of its digits is 3780, while the sum is 29.

The square root of 131623571 is about 11472.7316276465. The cubic root of 131623571 is about 508.6798755941.

The spelling of 131623571 in words is "one hundred thirty-one million, six hundred twenty-three thousand, five hundred seventy-one".