1331044999 has 2 divisors, whose sum is σ = 1331045000. Its totient is φ = 1331044998.

The previous prime is 1331044997. The next prime is 1331045003. The reversal of 1331044999 is 9994401331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331044999 - 2¹ = 1331044997 is a prime.

Together with 1331044997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331044991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665522499 + 665522500.

It is an arithmetic number, because the mean of its divisors is an integer number (665522500).

Almost surely, 2^1331044999 is an apocalyptic number.

1331044999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331044999 is an equidigital number, since it uses as much as digits as its factorization.

1331044999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 1331044999 is about 36483.4894027422. The cubic root of 1331044999 is about 1100.0123962790.

The spelling of 1331044999 in words is "one billion, three hundred thirty-one million, forty-four thousand, nine hundred ninety-nine".