23211131 has 8 divisors (see below), whose sum is σ = 23736240. Its totient is φ = 22690528.

The previous prime is 23211121. The next prime is 23211143. The reversal of 23211131 is 13111232.

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 23211131 - 2¹⁴ = 23194747 is a prime.

It is a super-2 number, since 2×23211131² = 1077513204598322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23211101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10625 + ... + 12621.

It is an arithmetic number, because the mean of its divisors is an integer number (2967030).

Almost surely, 2^23211131 is an apocalyptic number.

23211131 is a deficient number, since it is larger than the sum of its proper divisors (525109).

23211131 is a wasteful number, since it uses less digits than its factorization.

23211131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253.

The product of its digits is 36, while the sum is 14.

The square root of 23211131 is about 4817.7931670008. The cubic root of 23211131 is about 285.2542350272.

Adding to 23211131 its reverse (13111232), we get a palindrome (36322363).

The spelling of 23211131 in words is "twenty-three million, two hundred eleven thousand, one hundred thirty-one".