1323123212 has 12 divisors (see below), whose sum is σ = 2315863536. Its totient is φ = 661447920.

The previous prime is 1323123199. The next prime is 1323123251. The reversal of 1323123212 is 2123213231.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193 + ... + 51455.

It is an arithmetic number, because the mean of its divisors is an integer number (192988628).

Almost surely, 2^1323123212 is an apocalyptic number.

It is an amenable number.

1323123212 is a deficient number, since it is larger than the sum of its proper divisors (992740324).

1323123212 is a wasteful number, since it uses less digits than its factorization.

1323123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56848 (or 56846 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 1323123212 is about 36374.7606452606. The cubic root of 1323123212 is about 1097.8257913424.

Adding to 1323123212 its reverse (2123213231), we get a palindrome (3446336443).

The spelling of 1323123212 in words is "one billion, three hundred twenty-three million, one hundred twenty-three thousand, two hundred twelve".