1230001123 has 4 divisors (see below), whose sum is σ = 1324616608. Its totient is φ = 1135385640.

The previous prime is 1230001117. The next prime is 1230001141. The reversal of 1230001123 is 3211000321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230001123 is a prime.

It is a super-2 number, since 2×1230001123² = 3025805525162522258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 94615471 = 1230001123 / (1 + 2 + 3 + 0 + 0 + 0 + 1 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230001183) 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, 47307723 + ... + 47307748.

It is an arithmetic number, because the mean of its divisors is an integer number (331154152).

Almost surely, 2^1230001123 is an apocalyptic number.

1230001123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1230001123 is a deficient number, since it is larger than the sum of its proper divisors (94615485).

1230001123 is an equidigital number, since it uses as much as digits as its factorization.

1230001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94615484.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1230001123 is about 35071.3718437132. The cubic root of 1230001123 is about 1071.4415957689.

Adding to 1230001123 its reverse (3211000321), we get a palindrome (4441001444).

The spelling of 1230001123 in words is "one billion, two hundred thirty million, one thousand, one hundred twenty-three".