131244199 has 4 divisors (see below), whose sum is σ = 138964464. Its totient is φ = 123523936.

The previous prime is 131244193. The next prime is 131244203. The reversal of 131244199 is 991442131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131244199 - 2²³ = 122855591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131244193) 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, 3860107 + ... + 3860140.

It is an arithmetic number, because the mean of its divisors is an integer number (34741116).

Almost surely, 2^131244199 is an apocalyptic number.

131244199 is a deficient number, since it is larger than the sum of its proper divisors (7720265).

131244199 is an equidigital number, since it uses as much as digits as its factorization.

131244199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720264.

The product of its digits is 7776, while the sum is 34.

The square root of 131244199 is about 11456.1860581958. The cubic root of 131244199 is about 508.1906911666.

The spelling of 131244199 in words is "one hundred thirty-one million, two hundred forty-four thousand, one hundred ninety-nine".