1331000005 has 8 divisors (see below), whose sum is σ = 1609777152. Its totient is φ = 1056415248.

The previous prime is 1330999997. The next prime is 1331000017. The reversal of 1331000005 is 5000001331.

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 1331000005 - 2³ = 1330999997 is a prime.

It is a super-2 number, since 2×1331000005² = 3543122026620000050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1047397 + ... + 1048666.

It is an arithmetic number, because the mean of its divisors is an integer number (201222144).

Almost surely, 2^1331000005 is an apocalyptic number.

It is an amenable number.

1331000005 is a deficient number, since it is larger than the sum of its proper divisors (278777147).

1331000005 is a wasteful number, since it uses less digits than its factorization.

1331000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096195.

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 1331000005 is about 36482.8727624347. The cubic root of 1331000005 is about 1100.0000013774. Note that the first 5 decimals are identical.

Adding to 1331000005 its reverse (5000001331), we get a palindrome (6331001336).

The spelling of 1331000005 in words is "one billion, three hundred thirty-one million, five", and thus it is an aban number.