1263723132 has 120 divisors (see below), whose sum is σ = 3591374976. Its totient is φ = 345184224.

The previous prime is 1263723127. The next prime is 1263723133. The reversal of 1263723132 is 2313273621.

1263723132 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1263723132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263723133) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 661723 + ... + 663629.

Almost surely, 2^1263723132 is an apocalyptic number.

1263723132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263723132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1795687488).

1263723132 is an abundant number, since it is smaller than the sum of its proper divisors (2327651844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1263723132 is a wasteful number, since it uses less digits than its factorization.

1263723132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965 (or 1942 counting only the distinct ones).

The product of its digits is 9072, while the sum is 30.

The square root of 1263723132 is about 35548.8836955536. The cubic root of 1263723132 is about 1081.1450852039.

Adding to 1263723132 its reverse (2313273621), we get a palindrome (3576996753).

The spelling of 1263723132 in words is "one billion, two hundred sixty-three million, seven hundred twenty-three thousand, one hundred thirty-two".