1233201312 has 72 divisors (see below), whose sum is σ = 4007910816. Its totient is φ = 352342656.

The previous prime is 1233201293. The next prime is 1233201317. The reversal of 1233201312 is 2131023321.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1233201317) 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, 303838 + ... + 307869.

It is an arithmetic number, because the mean of its divisors is an integer number (55665428).

Almost surely, 2^1233201312 is an apocalyptic number.

1233201312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1233201312 is an abundant number, since it is smaller than the sum of its proper divisors (2774709504).

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

1233201312 is a wasteful number, since it uses less digits than its factorization.

1233201312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611730 (or 611719 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1233201312 is about 35116.9661559765. The cubic root of 1233201312 is about 1072.3700085332.

Adding to 1233201312 its reverse (2131023321), we get a palindrome (3364224633).

The spelling of 1233201312 in words is "one billion, two hundred thirty-three million, two hundred one thousand, three hundred twelve".