131745207 has 8 divisors (see below), whose sum is σ = 191629440. Its totient is φ = 79845560.

The previous prime is 131745203. The next prime is 131745241. The reversal of 131745207 is 702547131.

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 131745207 - 2² = 131745203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131745203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996107 + ... + 1996172.

It is an arithmetic number, because the mean of its divisors is an integer number (23953680).

Almost surely, 2^131745207 is an apocalyptic number.

131745207 is a deficient number, since it is larger than the sum of its proper divisors (59884233).

131745207 is a wasteful number, since it uses less digits than its factorization.

131745207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992293.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 131745207 is about 11478.0314949908. The cubic root of 131745207 is about 508.8365211327.

It can be divided in two parts, 13174 and 5207, that added together give a palindrome (18381).

The spelling of 131745207 in words is "one hundred thirty-one million, seven hundred forty-five thousand, two hundred seven".