1023123800 has 24 divisors (see below), whose sum is σ = 2378763300. Its totient is φ = 409249440.

The previous prime is 1023123791. The next prime is 1023123833. The reversal of 1023123800 is 83213201.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 5 ways as a sum of consecutive naturals, for example, 2557610 + ... + 2558009.

Almost surely, 2^1023123800 is an apocalyptic number.

1023123800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023123800 is an abundant number, since it is smaller than the sum of its proper divisors (1355639500).

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

1023123800 is a wasteful number, since it uses less digits than its factorization.

1023123800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115635 (or 5115626 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1023123800 is about 31986.3064451024. The cubic root of 1023123800 is about 1007.6492727696.

The spelling of 1023123800 in words is "one billion, twenty-three million, one hundred twenty-three thousand, eight hundred".