23213012 has 6 divisors (see below), whose sum is σ = 40622778. Its totient is φ = 11606504.

The previous prime is 23212999. The next prime is 23213033. The reversal of 23213012 is 21031232.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23174596 + 38416 = 4814^2 + 196^2 .

It is a super-2 number, since 2×23213012² = 1077687852224288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2901623 + ... + 2901630.

It is an arithmetic number, because the mean of its divisors is an integer number (6770463).

Almost surely, 2^23213012 is an apocalyptic number.

It is an amenable number.

23213012 is a deficient number, since it is larger than the sum of its proper divisors (17409766).

23213012 is a wasteful number, since it uses less digits than its factorization.

23213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5803257 (or 5803255 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23213012 is about 4817.9883769059. The cubic root of 23213012 is about 285.2619403637.

Adding to 23213012 its reverse (21031232), we get a palindrome (44244244).

The spelling of 23213012 in words is "twenty-three million, two hundred thirteen thousand, twelve".