1263231361 has 32 divisors (see below), whose sum is σ = 1532805120. Its totient is φ = 1018550400.

The previous prime is 1263231353. The next prime is 1263231373. The reversal of 1263231361 is 1631323621.

It is not a de Polignac number, because 1263231361 - 2³ = 1263231353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1263231331) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 957060 + ... + 958378.

It is an arithmetic number, because the mean of its divisors is an integer number (47900160).

Almost surely, 2^1263231361 is an apocalyptic number.

It is an amenable number.

1263231361 is a deficient number, since it is larger than the sum of its proper divisors (269573759).

1263231361 is a wasteful number, since it uses less digits than its factorization.

1263231361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485.

The product of its digits is 3888, while the sum is 28.

The square root of 1263231361 is about 35541.9661949082. The cubic root of 1263231361 is about 1081.0048264274.

Adding to 1263231361 its reverse (1631323621), we get a palindrome (2894554982).

The spelling of 1263231361 in words is "one billion, two hundred sixty-three million, two hundred thirty-one thousand, three hundred sixty-one".