1321362256 has 40 divisors (see below), whose sum is σ = 2603833344. Its totient is φ = 649461120.

The previous prime is 1321362209. The next prime is 1321362307. The reversal of 1321362256 is 6522631231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433570 + ... + 436606.

Almost surely, 2^1321362256 is an apocalyptic number.

1321362256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1321362256 is a deficient number, since it is larger than the sum of its proper divisors (1282471088).

1321362256 is a wasteful number, since it uses less digits than its factorization.

1321362256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3499 (or 3493 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 1321362256 is about 36350.5468459554. The cubic root of 1321362256 is about 1097.3385398708.

Adding to 1321362256 its reverse (6522631231), we get a palindrome (7843993487).

The spelling of 1321362256 in words is "one billion, three hundred twenty-one million, three hundred sixty-two thousand, two hundred fifty-six".