2111823231 has 16 divisors (see below), whose sum is σ = 3220953600. Its totient is φ = 1205654688.

The previous prime is 2111823209. The next prime is 2111823257. The reversal of 2111823231 is 1323281112.

It is not a de Polignac number, because 2111823231 - 2¹³ = 2111815039 is a prime.

It is a super-2 number, since 2×2111823231² = 8919594717982558722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111823281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22051 + ... + 68628.

It is an arithmetic number, because the mean of its divisors is an integer number (201309600).

Almost surely, 2^2111823231 is an apocalyptic number.

2111823231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2111823231 is a deficient number, since it is larger than the sum of its proper divisors (1109130369).

2111823231 is a wasteful number, since it uses less digits than its factorization.

2111823231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91798.

The product of its digits is 576, while the sum is 24.

The square root of 2111823231 is about 45954.5779112375. The cubic root of 2111823231 is about 1282.9779360100.

The spelling of 2111823231 in words is "two billion, one hundred eleven million, eight hundred twenty-three thousand, two hundred thirty-one".