1263331312 has 20 divisors (see below), whose sum is σ = 2454174520. Its totient is φ = 629995968.

The previous prime is 1263331309. The next prime is 1263331339. The reversal of 1263331312 is 2131333621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98103 + ... + 110230.

It is an arithmetic number, because the mean of its divisors is an integer number (122708726).

Almost surely, 2^1263331312 is an apocalyptic number.

It is an amenable number.

1263331312 is a deficient number, since it is larger than the sum of its proper divisors (1190843208).

1263331312 is a wasteful number, since it uses less digits than its factorization.

1263331312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208720 (or 208714 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

The square root of 1263331312 is about 35543.3722654449. The cubic root of 1263331312 is about 1081.0333365555.

Adding to 1263331312 its reverse (2131333621), we get a palindrome (3394664933).

The spelling of 1263331312 in words is "one billion, two hundred sixty-three million, three hundred thirty-one thousand, three hundred twelve".