23211442 has 4 divisors (see below), whose sum is σ = 34817166. Its totient is φ = 11605720.

The previous prime is 23211437. The next prime is 23211449. The reversal of 23211442 is 24411232.

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

It can be written as a sum of positive squares in only one way, i.e., 18054001 + 5157441 = 4249^2 + 2271^2 .

It is not an unprimeable number, because it can be changed into a prime (23211449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5802859 + ... + 5802862.

Almost surely, 2^23211442 is an apocalyptic number.

23211442 is a deficient number, since it is larger than the sum of its proper divisors (11605724).

23211442 is a wasteful number, since it uses less digits than its factorization.

23211442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11605723.

The product of its digits is 384, while the sum is 19.

The square root of 23211442 is about 4817.8254430811. The cubic root of 23211442 is about 285.2555090377.

Adding to 23211442 its reverse (24411232), we get a palindrome (47622674).

It can be divided in two parts, 23211 and 442, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 23211442 in words is "twenty-three million, two hundred eleven thousand, four hundred forty-two".