1123316398 has 4 divisors (see below), whose sum is σ = 1684974600. Its totient is φ = 561658198.

The previous prime is 1123316393. The next prime is 1123316419. The reversal of 1123316398 is 8936133211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8936133211 = 53 ⋅168606287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123316393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280829098 + ... + 280829101.

It is an arithmetic number, because the mean of its divisors is an integer number (421243650).

Almost surely, 2^1123316398 is an apocalyptic number.

1123316398 is a deficient number, since it is larger than the sum of its proper divisors (561658202).

1123316398 is an equidigital number, since it uses as much as digits as its factorization.

1123316398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561658201.

The product of its digits is 23328, while the sum is 37.

The square root of 1123316398 is about 33515.9126087893. The cubic root of 1123316398 is about 1039.5228327540.

The spelling of 1123316398 in words is "one billion, one hundred twenty-three million, three hundred sixteen thousand, three hundred ninety-eight".