1320143812 has 12 divisors (see below), whose sum is σ = 2487963436. Its totient is φ = 609297120.

The previous prime is 1320143809. The next prime is 1320143819. The reversal of 1320143812 is 2183410231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 861070336 + 459073476 = 29344^2 + 21426^2 .

It is not an unprimeable number, because it can be changed into a prime (1320143819) 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, 12693639 + ... + 12693742.

Almost surely, 2^1320143812 is an apocalyptic number.

It is an amenable number.

1320143812 is a deficient number, since it is larger than the sum of its proper divisors (1167819624).

1320143812 is a wasteful number, since it uses less digits than its factorization.

1320143812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25387398 (or 25387396 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1320143812 is about 36333.7833427789. The cubic root of 1320143812 is about 1097.0011464641.

The spelling of 1320143812 in words is "one billion, three hundred twenty million, one hundred forty-three thousand, eight hundred twelve".