23211994 has 24 divisors (see below), whose sum is σ = 38786580. Its totient is φ = 10356480.

The previous prime is 23211989. The next prime is 23211997. The reversal of 23211994 is 49911232.

It can be written as a sum of positive squares in 2 ways, for example, as 17514225 + 5697769 = 4185^2 + 2387^2 .

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (23211997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24522 + ... + 25450.

Almost surely, 2^23211994 is an apocalyptic number.

23211994 is a deficient number, since it is larger than the sum of its proper divisors (15574586).

23211994 is a wasteful number, since it uses less digits than its factorization.

23211994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 975 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 23211994 is about 4817.8827299967. The cubic root of 23211994 is about 285.2577702758.

The spelling of 23211994 in words is "twenty-three million, two hundred eleven thousand, nine hundred ninety-four".