305120023 has 8 divisors (see below), whose sum is σ = 331663248. Its totient is φ = 279015744.

The previous prime is 305120021. The next prime is 305120027. The reversal of 305120023 is 320021503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 305120023 - 2¹ = 305120021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 305119979 and 305120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305120021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108286 + ... + 111067.

It is an arithmetic number, because the mean of its divisors is an integer number (41457906).

Almost surely, 2^305120023 is an apocalyptic number.

305120023 is a deficient number, since it is larger than the sum of its proper divisors (26543225).

305120023 is a wasteful number, since it uses less digits than its factorization.

305120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219473.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 305120023 is about 17467.6851070770. The cubic root of 305120023 is about 673.2198346147.

Adding to 305120023 its reverse (320021503), we get a palindrome (625141526).

The spelling of 305120023 in words is "three hundred five million, one hundred twenty thousand, twenty-three".