1078123223 has 4 divisors (see below), whose sum is σ = 1078905288. Its totient is φ = 1077341160.

The previous prime is 1078123199. The next prime is 1078123237. The reversal of 1078123223 is 3223218701.

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 1078123223 - 2¹⁸ = 1077861079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078123253) 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, 388961 + ... + 391722.

It is an arithmetic number, because the mean of its divisors is an integer number (269726322).

Almost surely, 2^1078123223 is an apocalyptic number.

1078123223 is a deficient number, since it is larger than the sum of its proper divisors (782065).

1078123223 is an equidigital number, since it uses as much as digits as its factorization.

1078123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782064.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1078123223 is about 32834.7867817046. The cubic root of 1078123223 is about 1025.3909190643.

The spelling of 1078123223 in words is "one billion, seventy-eight million, one hundred twenty-three thousand, two hundred twenty-three".