2111209231 has 8 divisors (see below), whose sum is σ = 2147992704. Its totient is φ = 2074739160.

The previous prime is 2111209229. The next prime is 2111209237. The reversal of 2111209231 is 1329021112.

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

It is a cyclic number.

It is not a de Polignac number, because 2111209231 - 2¹ = 2111209229 is a prime.

It is a super-2 number, since 2×2111209231² = 8914408834119222722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111209237) 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, 64741 + ... + 91726.

It is an arithmetic number, because the mean of its divisors is an integer number (268499088).

Almost surely, 2^2111209231 is an apocalyptic number.

2111209231 is a deficient number, since it is larger than the sum of its proper divisors (36783473).

2111209231 is a wasteful number, since it uses less digits than its factorization.

2111209231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156701.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 2111209231 is about 45947.8969159634. The cubic root of 2111209231 is about 1282.8535845652.

The spelling of 2111209231 in words is "two billion, one hundred eleven million, two hundred nine thousand, two hundred thirty-one".