131199345 has 48 divisors (see below), whose sum is σ = 238859712. Its totient is φ = 69076800.

The previous prime is 131199317. The next prime is 131199359. The reversal of 131199345 is 543991131.

It is not a de Polignac number, because 131199345 - 2⁶ = 131199281 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100195 + ... + 101495.

It is an arithmetic number, because the mean of its divisors is an integer number (4976244).

Almost surely, 2^131199345 is an apocalyptic number.

131199345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131199345 is a deficient number, since it is larger than the sum of its proper divisors (107660367).

131199345 is an equidigital number, since it uses as much as digits as its factorization.

131199345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404 (or 1392 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 131199345 is about 11454.2282585952. The cubic root of 131199345 is about 508.1327915092.

The spelling of 131199345 in words is "one hundred thirty-one million, one hundred ninety-nine thousand, three hundred forty-five".