1263201135 has 48 divisors (see below), whose sum is σ = 2360210400. Its totient is φ = 575226624.

The previous prime is 1263201097. The next prime is 1263201139. The reversal of 1263201135 is 5311023621.

It is not a de Polignac number, because 1263201135 - 2⁷ = 1263201007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263201139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 194521 + ... + 200909.

It is an arithmetic number, because the mean of its divisors is an integer number (49171050).

Almost surely, 2^1263201135 is an apocalyptic number.

1263201135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1263201135 is a deficient number, since it is larger than the sum of its proper divisors (1097009265).

1263201135 is a wasteful number, since it uses less digits than its factorization.

1263201135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680 (or 6673 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1263201135 is about 35541.5409767219. The cubic root of 1263201135 is about 1080.9962044353.

Adding to 1263201135 its reverse (5311023621), we get a palindrome (6574224756).

The spelling of 1263201135 in words is "one billion, two hundred sixty-three million, two hundred one thousand, one hundred thirty-five".