305020023 has 16 divisors (see below), whose sum is σ = 507046656. Its totient is φ = 158451840.

The previous prime is 305020021. The next prime is 305020049. The reversal of 305020023 is 320020503.

It is not a de Polignac number, because 305020023 - 2¹ = 305020021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 305019984 and 305020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305020021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 659986 + ... + 660447.

It is an arithmetic number, because the mean of its divisors is an integer number (31690416).

Almost surely, 2^305020023 is an apocalyptic number.

305020023 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

305020023 is a deficient number, since it is larger than the sum of its proper divisors (202026633).

305020023 is a wasteful number, since it uses less digits than its factorization.

305020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320454.

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 305020023 is about 17464.8224439872. The cubic root of 305020023 is about 673.1462795824.

Adding to 305020023 its reverse (320020503), we get a palindrome (625040526).

The spelling of 305020023 in words is "three hundred five million, twenty thousand, twenty-three".