2111302231 has 4 divisors (see below), whose sum is σ = 2112235000. Its totient is φ = 2110369464.

The previous prime is 2111302201. The next prime is 2111302307. The reversal of 2111302231 is 1322031112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2111302231 - 2¹¹ = 2111300183 is a prime.

It is a super-2 number, since 2×2111302231² = 8915194221251154722, 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 (2111302201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462981 + ... + 467518.

It is an arithmetic number, because the mean of its divisors is an integer number (528058750).

Almost surely, 2^2111302231 is an apocalyptic number.

2111302231 is a deficient number, since it is larger than the sum of its proper divisors (932769).

2111302231 is an equidigital number, since it uses as much as digits as its factorization.

2111302231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932768.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2111302231 is about 45948.9089206697. The cubic root of 2111302231 is about 1282.8724211053.

Adding to 2111302231 its reverse (1322031112), we get a palindrome (3433333343).

The spelling of 2111302231 in words is "two billion, one hundred eleven million, three hundred two thousand, two hundred thirty-one".