1113210191 has 2 divisors, whose sum is σ = 1113210192. Its totient is φ = 1113210190.

The previous prime is 1113210173. The next prime is 1113210199. The reversal of 1113210191 is 1910123111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1113210191 - 2⁶ = 1113210127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113210199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556605095 + 556605096.

It is an arithmetic number, because the mean of its divisors is an integer number (556605096).

Almost surely, 2^1113210191 is an apocalyptic number.

1113210191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113210191 is an equidigital number, since it uses as much as digits as its factorization.

1113210191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 20.

The square root of 1113210191 is about 33364.8046749865. The cubic root of 1113210191 is about 1036.3959912814.

The spelling of 1113210191 in words is "one billion, one hundred thirteen million, two hundred ten thousand, one hundred ninety-one".