2111322231 has 24 divisors (see below), whose sum is σ = 3204973200. Its totient is φ = 1337648256.

The previous prime is 2111322229. The next prime is 2111322263. The reversal of 2111322231 is 1322231112.

2111322231 is a `hidden beast` number, since 2 + 111 + 322 + 231 = 666.

It is not a de Polignac number, because 2111322231 - 2¹ = 2111322229 is a prime.

It is a super-2 number, since 2×2111322231² = 8915363126229634722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111322221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59406 + ... + 88043.

It is an arithmetic number, because the mean of its divisors is an integer number (133540550).

Almost surely, 2^2111322231 is an apocalyptic number.

2111322231 is a deficient number, since it is larger than the sum of its proper divisors (1093650969).

2111322231 is a wasteful number, since it uses less digits than its factorization.

2111322231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147535 (or 147532 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2111322231 is about 45949.1265531784. The cubic root of 2111322231 is about 1282.8764719018.

Adding to 2111322231 its reverse (1322231112), we get a palindrome (3433553343).

The spelling of 2111322231 in words is "two billion, one hundred eleven million, three hundred twenty-two thousand, two hundred thirty-one".