1232021312 has 28 divisors (see below), whose sum is σ = 2551090656. Its totient is φ = 589226880.

The previous prime is 1232021311. The next prime is 1232021317. The reversal of 1232021312 is 2131202321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232021311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417014 + ... + 419957.

Almost surely, 2^1232021312 is an apocalyptic number.

It is an amenable number.

1232021312 is an abundant number, since it is smaller than the sum of its proper divisors (1319069344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1232021312 is an equidigital number, since it uses as much as digits as its factorization.

1232021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837006 (or 836996 counting only the distinct ones).

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

The square root of 1232021312 is about 35100.1611392313. The cubic root of 1232021312 is about 1072.0278636851.

Adding to 1232021312 its reverse (2131202321), we get a palindrome (3363223633).

The spelling of 1232021312 in words is "one billion, two hundred thirty-two million, twenty-one thousand, three hundred twelve".