131113399 has 8 divisors (see below), whose sum is σ = 133903440. Its totient is φ = 128342400.

The previous prime is 131113397. The next prime is 131113417. The reversal of 131113399 is 993311131.

It is a happy number.

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 131113399 - 2¹ = 131113397 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 131113399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131113391) 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, 9609 + ... + 18829.

It is an arithmetic number, because the mean of its divisors is an integer number (16737930).

Almost surely, 2^131113399 is an apocalyptic number.

131113399 is a deficient number, since it is larger than the sum of its proper divisors (2790041).

131113399 is an equidigital number, since it uses as much as digits as its factorization.

131113399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9521.

The product of its digits is 2187, while the sum is 31.

The square root of 131113399 is about 11450.4759289734. The cubic root of 131113399 is about 508.0218114821.

The spelling of 131113399 in words is "one hundred thirty-one million, one hundred thirteen thousand, three hundred ninety-nine".