113021819 has 2 divisors, whose sum is σ = 113021820. Its totient is φ = 113021818.

The previous prime is 113021801. The next prime is 113021827. The reversal of 113021819 is 918120311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113021819 is a prime.

It is a super-2 number, since 2×113021819² = 25547863140137522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (113021719) 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 as a sum of consecutive naturals, namely, 56510909 + 56510910.

It is an arithmetic number, because the mean of its divisors is an integer number (56510910).

Almost surely, 2^113021819 is an apocalyptic number.

113021819 is a deficient number, since it is larger than the sum of its proper divisors (1).

113021819 is an equidigital number, since it uses as much as digits as its factorization.

113021819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 113021819 is about 10631.1720426301. The cubic root of 113021819 is about 483.4899274869.

The spelling of 113021819 in words is "one hundred thirteen million, twenty-one thousand, eight hundred nineteen".