131645207 has 8 divisors (see below), whose sum is σ = 133858896. Its totient is φ = 129442752.

The previous prime is 131645197. The next prime is 131645249. The reversal of 131645207 is 702546131.

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 131645207 - 2¹⁶ = 131579671 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 131645207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131645257) 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, 22733 + ... + 27929.

It is an arithmetic number, because the mean of its divisors is an integer number (16732362).

Almost surely, 2^131645207 is an apocalyptic number.

131645207 is a deficient number, since it is larger than the sum of its proper divisors (2213689).

131645207 is an equidigital number, since it uses as much as digits as its factorization.

131645207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5617.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 131645207 is about 11473.6745203967. The cubic root of 131645207 is about 508.7077459690.

The spelling of 131645207 in words is "one hundred thirty-one million, six hundred forty-five thousand, two hundred seven".