1311461808 has 20 divisors (see below), whose sum is σ = 3387943128. Its totient is φ = 437153920.

The previous prime is 1311461797. The next prime is 1311461831. The reversal of 1311461808 is 8081641131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13661013 + ... + 13661108.

Almost surely, 2^1311461808 is an apocalyptic number.

It is an amenable number.

1311461808 is an abundant number, since it is smaller than the sum of its proper divisors (2076481320).

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

1311461808 is a wasteful number, since it uses less digits than its factorization.

1311461808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27322132 (or 27322126 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 1311461808 is about 36214.1106200332. The cubic root of 1311461808 is about 1094.5910242671.

The spelling of 1311461808 in words is "one billion, three hundred eleven million, four hundred sixty-one thousand, eight hundred eight".