1321433012 has 24 divisors (see below), whose sum is σ = 2377401600. Its totient is φ = 642362400.

The previous prime is 1321433011. The next prime is 1321433023. The reversal of 1321433012 is 2103341231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321433011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5114 + ... + 51662.

It is an arithmetic number, because the mean of its divisors is an integer number (99058400).

Almost surely, 2^1321433012 is an apocalyptic number.

It is an amenable number.

1321433012 is a deficient number, since it is larger than the sum of its proper divisors (1055968588).

1321433012 is a wasteful number, since it uses less digits than its factorization.

1321433012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46751 (or 46749 counting only the distinct ones).

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

The square root of 1321433012 is about 36351.5200782581. The cubic root of 1321433012 is about 1097.3581261979.

Adding to 1321433012 its reverse (2103341231), we get a palindrome (3424774243).

The spelling of 1321433012 in words is "one billion, three hundred twenty-one million, four hundred thirty-three thousand, twelve".