289130123 has 4 divisors (see below), whose sum is σ = 289232160. Its totient is φ = 289028088.

The previous prime is 289130113. The next prime is 289130137. The reversal of 289130123 is 321031982.

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 289130123 - 2⁶ = 289130059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289130113) 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, 46643 + ... + 52476.

It is an arithmetic number, because the mean of its divisors is an integer number (72308040).

Almost surely, 2^289130123 is an apocalyptic number.

289130123 is a deficient number, since it is larger than the sum of its proper divisors (102037).

289130123 is an equidigital number, since it uses as much as digits as its factorization.

289130123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102036.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 289130123 is about 17003.8267163601. The cubic root of 289130123 is about 661.2481149599.

The spelling of 289130123 in words is "two hundred eighty-nine million, one hundred thirty thousand, one hundred twenty-three".