2111210231 has 4 divisors (see below), whose sum is σ = 2273611032. Its totient is φ = 1948809432.

The previous prime is 2111210177. The next prime is 2111210239. The reversal of 2111210231 is 1320121112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111210231 is a prime.

It is a super-2 number, since 2×2111210231² = 8914417278958146722, 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 (2111210239) 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, 81200381 + ... + 81200406.

It is an arithmetic number, because the mean of its divisors is an integer number (568402758).

Almost surely, 2^2111210231 is an apocalyptic number.

2111210231 is a deficient number, since it is larger than the sum of its proper divisors (162400801).

2111210231 is a wasteful number, since it uses less digits than its factorization.

2111210231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162400800.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2111210231 is about 45947.9077978530. The cubic root of 2111210231 is about 1282.8537871116.

Adding to 2111210231 its reverse (1320121112), we get a palindrome (3431331343).

The spelling of 2111210231 in words is "two billion, one hundred eleven million, two hundred ten thousand, two hundred thirty-one".