1263663231 has 16 divisors (see below), whose sum is σ = 1726179840. Its totient is φ = 821842560.

The previous prime is 1263663221. The next prime is 1263663253. The reversal of 1263663231 is 1323663621.

It is not a de Polignac number, because 1263663231 - 2¹¹ = 1263661183 is a prime.

It is a super-2 number, since 2×1263663231² = 3193689522762718722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1263663192 and 1263663201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263663221) 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 15 ways as a sum of consecutive naturals, for example, 108090 + ... + 119208.

It is an arithmetic number, because the mean of its divisors is an integer number (107886240).

Almost surely, 2^1263663231 is an apocalyptic number.

1263663231 is a deficient number, since it is larger than the sum of its proper divisors (462516609).

1263663231 is a wasteful number, since it uses less digits than its factorization.

1263663231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12046.

The product of its digits is 23328, while the sum is 33.

The square root of 1263663231 is about 35548.0411696622. The cubic root of 1263663231 is about 1081.1280026923.

The spelling of 1263663231 in words is "one billion, two hundred sixty-three million, six hundred sixty-three thousand, two hundred thirty-one".