1113321091 has 4 divisors (see below), whose sum is σ = 1132191000. Its totient is φ = 1094451184.

The previous prime is 1113321067. The next prime is 1113321103. The reversal of 1113321091 is 1901233111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1901233111 = 17209 ⋅110479.

It is a cyclic number.

It is not a de Polignac number, because 1113321091 - 2⁵ = 1113321059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113321791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9434866 + ... + 9434983.

It is an arithmetic number, because the mean of its divisors is an integer number (283047750).

Almost surely, 2^1113321091 is an apocalyptic number.

1113321091 is a deficient number, since it is larger than the sum of its proper divisors (18869909).

1113321091 is an equidigital number, since it uses as much as digits as its factorization.

1113321091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18869908.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1113321091 is about 33366.4665645016. The cubic root of 1113321091 is about 1036.4304060158.

The spelling of 1113321091 in words is "one billion, one hundred thirteen million, three hundred twenty-one thousand, ninety-one".