1331214727 has 8 divisors (see below), whose sum is σ = 1427718960. Its totient is φ = 1237354560.

The previous prime is 1331214671. The next prime is 1331214751. The reversal of 1331214727 is 7274121331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331214727 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 (1331214757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659974 + ... + 661987.

It is an arithmetic number, because the mean of its divisors is an integer number (178464870).

Almost surely, 2^1331214727 is an apocalyptic number.

1331214727 is a deficient number, since it is larger than the sum of its proper divisors (96504233).

1331214727 is a wasteful number, since it uses less digits than its factorization.

1331214727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322033.

The product of its digits is 7056, while the sum is 31.

The square root of 1331214727 is about 36485.8154218869. The cubic root of 1331214727 is about 1100.0591502628.

The spelling of 1331214727 in words is "one billion, three hundred thirty-one million, two hundred fourteen thousand, seven hundred twenty-seven".