1163431268 has 12 divisors (see below), whose sum is σ = 2036306412. Its totient is φ = 581629440.

The previous prime is 1163431253. The next prime is 1163431273. The reversal of 1163431268 is 8621343611.

It can be written as a sum of positive squares in 2 ways, for example, as 402885184 + 760546084 = 20072^2 + 27578^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16148 + ... + 50868.

It is an arithmetic number, because the mean of its divisors is an integer number (169692201).

Almost surely, 2^1163431268 is an apocalyptic number.

It is an amenable number.

1163431268 is a deficient number, since it is larger than the sum of its proper divisors (872875144).

1163431268 is a wasteful number, since it uses less digits than its factorization.

1163431268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43102 (or 43100 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 1163431268 is about 34109.1082850314. The cubic root of 1163431268 is about 1051.7525585829.

Adding to 1163431268 its reverse (8621343611), we get a palindrome (9784774879).

The spelling of 1163431268 in words is "one billion, one hundred sixty-three million, four hundred thirty-one thousand, two hundred sixty-eight".