1121313223 has 4 divisors (see below), whose sum is σ = 1148662368. Its totient is φ = 1093964080.

The previous prime is 1121313197. The next prime is 1121313229. The reversal of 1121313223 is 3223131211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121313223 - 2⁹ = 1121312711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121313223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121313229) 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, 13674511 + ... + 13674592.

It is an arithmetic number, because the mean of its divisors is an integer number (287165592).

Almost surely, 2^1121313223 is an apocalyptic number.

1121313223 is a deficient number, since it is larger than the sum of its proper divisors (27349145).

1121313223 is an equidigital number, since it uses as much as digits as its factorization.

1121313223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27349144.

The product of its digits is 216, while the sum is 19.

The square root of 1121313223 is about 33486.0153347633. The cubic root of 1121313223 is about 1038.9045489009.

Adding to 1121313223 its reverse (3223131211), we get a palindrome (4344444434).

The spelling of 1121313223 in words is "one billion, one hundred twenty-one million, three hundred thirteen thousand, two hundred twenty-three".