1311666441 has 8 divisors (see below), whose sum is σ = 1753655424. Its totient is φ = 872060880.

The previous prime is 1311666439. The next prime is 1311666443. The reversal of 1311666441 is 1446661131.

It is an interprime number because it is at equal distance from previous prime (1311666439) and next prime (1311666443).

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

It is not a de Polignac number, because 1311666441 - 2¹ = 1311666439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311666443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594570 + ... + 596771.

It is an arithmetic number, because the mean of its divisors is an integer number (219206928).

Almost surely, 2^1311666441 is an apocalyptic number.

It is an amenable number.

1311666441 is a deficient number, since it is larger than the sum of its proper divisors (441988983).

1311666441 is a wasteful number, since it uses less digits than its factorization.

1311666441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191711.

The product of its digits is 10368, while the sum is 33.

The square root of 1311666441 is about 36216.9358311826. The cubic root of 1311666441 is about 1094.6479525473.

The spelling of 1311666441 in words is "one billion, three hundred eleven million, six hundred sixty-six thousand, four hundred forty-one".