20111234 has 32 divisors (see below), whose sum is σ = 37316160. Its totient is φ = 7992000.

The previous prime is 20111213. The next prime is 20111243. The reversal of 20111234 is 43211102.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3584 + ... + 7284.

It is an arithmetic number, because the mean of its divisors is an integer number (1166130).

Almost surely, 2^20111234 is an apocalyptic number.

20111234 is a deficient number, since it is larger than the sum of its proper divisors (17204926).

20111234 is a wasteful number, since it uses less digits than its factorization.

20111234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3746.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 20111234 is about 4484.5550503924. Note that the first 3 decimals coincide. The cubic root of 20111234 is about 271.9440574829.

Adding to 20111234 its reverse (43211102), we get a palindrome (63322336).

The spelling of 20111234 in words is "twenty million, one hundred eleven thousand, two hundred thirty-four".