1311454973 has 8 divisors (see below), whose sum is σ = 1359260760. Its totient is φ = 1264299840.

The previous prime is 1311454957. The next prime is 1311454999. The reversal of 1311454973 is 3794541131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 394697689 + 916757284 = 19867^2 + 30278^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1311454973 - 2⁴ = 1311454957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311454913) 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, 158558 + ... + 166623.

It is an arithmetic number, because the mean of its divisors is an integer number (169907595).

Almost surely, 2^1311454973 is an apocalyptic number.

It is an amenable number.

1311454973 is a deficient number, since it is larger than the sum of its proper divisors (47805787).

1311454973 is a wasteful number, since it uses less digits than its factorization.

1311454973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325327.

The product of its digits is 45360, while the sum is 38.

The square root of 1311454973 is about 36214.0162506177. The cubic root of 1311454973 is about 1094.5891226886.

The spelling of 1311454973 in words is "one billion, three hundred eleven million, four hundred fifty-four thousand, nine hundred seventy-three".