1311457384 has 16 divisors (see below), whose sum is σ = 2603628900. Its totient is φ = 617156352.

The previous prime is 1311457373. The next prime is 1311457391. The reversal of 1311457384 is 4837541131.

It can be written as a sum of positive squares in 2 ways, for example, as 1285222500 + 26234884 = 35850^2 + 5122^2 .

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, 4821399 + ... + 4821670.

Almost surely, 2^1311457384 is an apocalyptic number.

It is an amenable number.

1311457384 is a deficient number, since it is larger than the sum of its proper divisors (1292171516).

1311457384 is a wasteful number, since it uses less digits than its factorization.

1311457384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9643092 (or 9643088 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 1311457384 is about 36214.0495388185. The cubic root of 1311457384 is about 1094.5897934583.

The spelling of 1311457384 in words is "one billion, three hundred eleven million, four hundred fifty-seven thousand, three hundred eighty-four".