23211123331 has 4 divisors (see below), whose sum is σ = 25321225464. Its totient is φ = 21101021200.

The previous prime is 23211123329. The next prime is 23211123337. The reversal of 23211123331 is 13332111232.

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 23211123331 - 2¹ = 23211123329 is a prime.

It is a super-2 number, since 2×23211123331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23211123337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055051050 + ... + 1055051071.

It is an arithmetic number, because the mean of its divisors is an integer number (6330306366).

Almost surely, 2^23211123331 is an apocalyptic number.

23211123331 is a deficient number, since it is larger than the sum of its proper divisors (2110102133).

23211123331 is a wasteful number, since it uses less digits than its factorization.

23211123331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110102132.

The product of its digits is 648, while the sum is 22.

Adding to 23211123331 its reverse (13332111232), we get a palindrome (36543234563).

The spelling of 23211123331 in words is "twenty-three billion, two hundred eleven million, one hundred twenty-three thousand, three hundred thirty-one".