1263756323 has 12 divisors (see below), whose sum is σ = 1308138480. Its totient is φ = 1220837040.

The previous prime is 1263756317. The next prime is 1263756331. The reversal of 1263756323 is 3236573621.

It is not a de Polignac number, because 1263756323 - 2⁶ = 1263756259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263756313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 957458 + ... + 958776.

It is an arithmetic number, because the mean of its divisors is an integer number (109011540).

Almost surely, 2^1263756323 is an apocalyptic number.

1263756323 is a deficient number, since it is larger than the sum of its proper divisors (44382157).

1263756323 is an equidigital number, since it uses as much as digits as its factorization.

1263756323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378 (or 2347 counting only the distinct ones).

The product of its digits is 136080, while the sum is 38.

The square root of 1263756323 is about 35549.3505285258. The cubic root of 1263756323 is about 1081.1545503500.

The spelling of 1263756323 in words is "one billion, two hundred sixty-three million, seven hundred fifty-six thousand, three hundred twenty-three".