1311309814 has 16 divisors (see below), whose sum is σ = 2071194480. Its totient is φ = 620935200.

The previous prime is 1311309809. The next prime is 1311309829. The reversal of 1311309814 is 4189031131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213612 + ... + 219664.

It is an arithmetic number, because the mean of its divisors is an integer number (129449655).

Almost surely, 2^1311309814 is an apocalyptic number.

1311309814 is a deficient number, since it is larger than the sum of its proper divisors (759884666).

1311309814 is a wasteful number, since it uses less digits than its factorization.

1311309814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11775.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1311309814 is about 36212.0120125905. The cubic root of 1311309814 is about 1094.5487361641.

The spelling of 1311309814 in words is "one billion, three hundred eleven million, three hundred nine thousand, eight hundred fourteen".