1123247823 has 4 divisors (see below), whose sum is σ = 1497663768. Its totient is φ = 748831880.

The previous prime is 1123247821. The next prime is 1123247837. The reversal of 1123247823 is 3287423211.

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 1123247823 - 2¹ = 1123247821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123247821) 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, 187207968 + ... + 187207973.

It is an arithmetic number, because the mean of its divisors is an integer number (374415942).

Almost surely, 2^1123247823 is an apocalyptic number.

1123247823 is a deficient number, since it is larger than the sum of its proper divisors (374415945).

1123247823 is an equidigital number, since it uses as much as digits as its factorization.

1123247823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374415944.

The product of its digits is 16128, while the sum is 33.

The square root of 1123247823 is about 33514.8895716516. The cubic root of 1123247823 is about 1039.5016791031.

The spelling of 1123247823 in words is "one billion, one hundred twenty-three million, two hundred forty-seven thousand, eight hundred twenty-three".