113431399 has 2 divisors, whose sum is σ = 113431400. Its totient is φ = 113431398.

The previous prime is 113431397. The next prime is 113431427. The reversal of 113431399 is 993134311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113431399 - 2¹ = 113431397 is a prime.

Together with 113431397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113431397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56715699 + 56715700.

It is an arithmetic number, because the mean of its divisors is an integer number (56715700).

Almost surely, 2^113431399 is an apocalyptic number.

113431399 is a deficient number, since it is larger than the sum of its proper divisors (1).

113431399 is an equidigital number, since it uses as much as digits as its factorization.

113431399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 34.

The square root of 113431399 is about 10650.4177852327. The cubic root of 113431399 is about 484.0732634468.

The spelling of 113431399 in words is "one hundred thirteen million, four hundred thirty-one thousand, three hundred ninety-nine".