1311493371 has 8 divisors (see below), whose sum is σ = 1748835840. Its totient is φ = 874239912.

The previous prime is 1311493369. The next prime is 1311493423. The reversal of 1311493371 is 1733941131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311493371 - 2¹ = 1311493369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311493301) 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 7 ways as a sum of consecutive naturals, for example, 28986 + ... + 58848.

It is an arithmetic number, because the mean of its divisors is an integer number (218604480).

Almost surely, 2^1311493371 is an apocalyptic number.

1311493371 is a deficient number, since it is larger than the sum of its proper divisors (437342469).

1311493371 is a wasteful number, since it uses less digits than its factorization.

1311493371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44505.

The product of its digits is 6804, while the sum is 33.

The square root of 1311493371 is about 36214.5464005833. The cubic root of 1311493371 is about 1094.5998053842.

The spelling of 1311493371 in words is "one billion, three hundred eleven million, four hundred ninety-three thousand, three hundred seventy-one".