23081211 has 6 divisors (see below), whose sum is σ = 33339540. Its totient is φ = 15387468.

The previous prime is 23081209. The next prime is 23081249. The reversal of 23081211 is 11218032.

It is not a de Polignac number, because 23081211 - 2¹ = 23081209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23081251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1282281 + ... + 1282298.

It is an arithmetic number, because the mean of its divisors is an integer number (5556590).

Almost surely, 2^23081211 is an apocalyptic number.

23081211 is a deficient number, since it is larger than the sum of its proper divisors (10258329).

23081211 is a wasteful number, since it uses less digits than its factorization.

23081211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564585 (or 2564582 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 23081211 is about 4804.2908946066. The cubic root of 23081211 is about 284.7210197068.

Adding to 23081211 its reverse (11218032), we get a palindrome (34299243).

The spelling of 23081211 in words is "twenty-three million, eighty-one thousand, two hundred eleven".