1331054999 has 2 divisors, whose sum is σ = 1331055000. Its totient is φ = 1331054998.

The previous prime is 1331054969. The next prime is 1331055017. The reversal of 1331054999 is 9994501331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331054999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331054929) 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 as a sum of consecutive naturals, namely, 665527499 + 665527500.

It is an arithmetic number, because the mean of its divisors is an integer number (665527500).

Almost surely, 2^1331054999 is an apocalyptic number.

1331054999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331054999 is an equidigital number, since it uses as much as digits as its factorization.

1331054999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 1331054999 is about 36483.6264507793. The cubic root of 1331054999 is about 1100.0151510310.

The spelling of 1331054999 in words is "one billion, three hundred thirty-one million, fifty-four thousand, nine hundred ninety-nine".