1123400334 has 32 divisors (see below), whose sum is σ = 2571803136. Its totient is φ = 320467680.

The previous prime is 1123400329. The next prime is 1123400353. The reversal of 1123400334 is 4330043211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123400334.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6504 + ... + 47844.

It is an arithmetic number, because the mean of its divisors is an integer number (80368848).

Almost surely, 2^1123400334 is an apocalyptic number.

1123400334 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1123400334 is an abundant number, since it is smaller than the sum of its proper divisors (1448402802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123400334 is a wasteful number, since it uses less digits than its factorization.

1123400334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42000.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1123400334 is about 33517.1647667281. The cubic root of 1123400334 is about 1039.5487237127.

Adding to 1123400334 its reverse (4330043211), we get a palindrome (5453443545).

The spelling of 1123400334 in words is "one billion, one hundred twenty-three million, four hundred thousand, three hundred thirty-four".