20111030 has 16 divisors (see below), whose sum is σ = 36659520. Its totient is φ = 7942272.

The previous prime is 20111027. The next prime is 20111053. The reversal of 20111030 is 3011102.

It is a junction number, because it is equal to n+sod(n) for n = 20110999 and 20111017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11939 + ... + 13518.

It is an arithmetic number, because the mean of its divisors is an integer number (2291220).

Almost surely, 2^20111030 is an apocalyptic number.

20111030 is a deficient number, since it is larger than the sum of its proper divisors (16548490).

20111030 is a wasteful number, since it uses less digits than its factorization.

20111030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25543.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 20111030 is about 4484.5323056033. The cubic root of 20111030 is about 271.9431379840.

Adding to 20111030 its reverse (3011102), we get a palindrome (23122132).

The spelling of 20111030 in words is "twenty million, one hundred eleven thousand, thirty".