20111331214 has 16 divisors (see below), whose sum is σ = 32496539040. Its totient is φ = 9279580320.

The previous prime is 20111331181. The next prime is 20111331319. The reversal of 20111331214 is 41213311102.

It is a junction number, because it is equal to n+sod(n) for n = 20111331191 and 20111331200.

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, 9909 + ... + 200800.

It is an arithmetic number, because the mean of its divisors is an integer number (2031033690).

Almost surely, 2^20111331214 is an apocalyptic number.

20111331214 is a deficient number, since it is larger than the sum of its proper divisors (12385207826).

20111331214 is a wasteful number, since it uses less digits than its factorization.

20111331214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214395.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20111331214 its reverse (41213311102), we get a palindrome (61324642316).

The spelling of 20111331214 in words is "twenty billion, one hundred eleven million, three hundred thirty-one thousand, two hundred fourteen".