20123369 has 12 divisors (see below), whose sum is σ = 23485824. Its totient is φ = 17191944.

The previous prime is 20123347. The next prime is 20123377. The reversal of 20123369 is 96332102.

It is not a de Polignac number, because 20123369 - 2¹⁶ = 20057833 is a prime.

It is a super-2 number, since 2×20123369² = 809899959820322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22244 + ... + 23130.

It is an arithmetic number, because the mean of its divisors is an integer number (1957152).

Almost surely, 2^20123369 is an apocalyptic number.

It is an amenable number.

20123369 is a deficient number, since it is larger than the sum of its proper divisors (3362455).

20123369 is an equidigital number, since it uses as much as digits as its factorization.

20123369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 1357 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 20123369 is about 4485.9078233954. The cubic root of 20123369 is about 271.9987429656.

The spelling of 20123369 in words is "twenty million, one hundred twenty-three thousand, three hundred sixty-nine".