20123331 has 8 divisors (see below), whose sum is σ = 26869584. Its totient is φ = 13396320.

The previous prime is 20123293. The next prime is 20123339. The reversal of 20123331 is 13332102.

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

It is not a de Polignac number, because 20123331 - 2⁹ = 20122819 is a prime.

It is a super-2 number, since 2×20123331² = 809896901071122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20123331.

It is not an unprimeable number, because it can be changed into a prime (20123339) 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, 2160 + ... + 6701.

It is an arithmetic number, because the mean of its divisors is an integer number (3358698).

Almost surely, 2^20123331 is an apocalyptic number.

20123331 is a deficient number, since it is larger than the sum of its proper divisors (6746253).

20123331 is an equidigital number, since it uses as much as digits as its factorization.

20123331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9621.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 20123331 is about 4485.9035879073. The cubic root of 20123331 is about 271.9985717558.

Adding to 20123331 its reverse (13332102), we get a palindrome (33455433).

It can be divided in two parts, 201 and 23331, that added together give a palindrome (23532).

The spelling of 20123331 in words is "twenty million, one hundred twenty-three thousand, three hundred thirty-one".