1263423323313 has 16 divisors (see below), whose sum is σ = 1872081976000. Its totient is φ = 842127541920.

The previous prime is 1263423323303. The next prime is 1263423323329. The reversal of 1263423323313 is 3133233243621.

1263423323313 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 4 + 2 + 332 + 3 + 313 = 666.

It is not a de Polignac number, because 1263423323313 - 2²¹ = 1263421226161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263423323303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4146643 + ... + 4440888.

It is an arithmetic number, because the mean of its divisors is an integer number (117005123500).

Almost surely, 2^{1263423323313} is an apocalyptic number.

It is an amenable number.

1263423323313 is a deficient number, since it is larger than the sum of its proper divisors (608658652687).

1263423323313 is an equidigital number, since it uses as much as digits as its factorization.

1263423323313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8592989 (or 8592983 counting only the distinct ones).

The product of its digits is 139968, while the sum is 36.

Adding to 1263423323313 its reverse (3133233243621), we get a palindrome (4396656566934).

The spelling of 1263423323313 in words is "one trillion, two hundred sixty-three billion, four hundred twenty-three million, three hundred twenty-three thousand, three hundred thirteen".