123212312 has 32 divisors (see below), whose sum is σ = 235580400. Its totient is φ = 60403200.

The previous prime is 123212293. The next prime is 123212347. The reversal of 123212312 is 213212321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92612 + ... + 93932.

Almost surely, 2^123212312 is an apocalyptic number.

It is an amenable number.

123212312 is a deficient number, since it is larger than the sum of its proper divisors (112368088).

123212312 is a wasteful number, since it uses less digits than its factorization.

123212312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1543 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 123212312 is about 11100.1041436556. The cubic root of 123212312 is about 497.6049619029.

Adding to 123212312 its reverse (213212321), we get a palindrome (336424633).

Subtracting 123212312 from its reverse (213212321), we obtain a palindrome (90000009).

The spelling of 123212312 in words is "one hundred twenty-three million, two hundred twelve thousand, three hundred twelve".