23211142 has 8 divisors (see below), whose sum is σ = 35626536. Its totient is φ = 11335632.

The previous prime is 23211121. The next prime is 23211143. The reversal of 23211142 is 24111232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×23211142² = 1077514225888328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23211143) 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, 134863 + ... + 135034.

It is an arithmetic number, because the mean of its divisors is an integer number (4453317).

Almost surely, 2^23211142 is an apocalyptic number.

23211142 is a deficient number, since it is larger than the sum of its proper divisors (12415394).

23211142 is a wasteful number, since it uses less digits than its factorization.

23211142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269942.

The product of its digits is 96, while the sum is 16.

The square root of 23211142 is about 4817.7943086022. The cubic root of 23211142 is about 285.2542800889.

Adding to 23211142 its reverse (24111232), we get a palindrome (47322374).

The spelling of 23211142 in words is "twenty-three million, two hundred eleven thousand, one hundred forty-two".