113821291 has 2 divisors, whose sum is σ = 113821292. Its totient is φ = 113821290.

The previous prime is 113821261. The next prime is 113821297. The reversal of 113821291 is 192128311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113821291 - 2⁹ = 113820779 is a prime.

It is not a weakly prime, because it can be changed into another prime (113821297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56910645 + 56910646.

It is an arithmetic number, because the mean of its divisors is an integer number (56910646).

Almost surely, 2^113821291 is an apocalyptic number.

113821291 is a deficient number, since it is larger than the sum of its proper divisors (1).

113821291 is an equidigital number, since it uses as much as digits as its factorization.

113821291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 28.

The square root of 113821291 is about 10668.7061539814. The cubic root of 113821291 is about 484.6272560271.

The spelling of 113821291 in words is "one hundred thirteen million, eight hundred twenty-one thousand, two hundred ninety-one".