1331034191 has 2 divisors, whose sum is σ = 1331034192. Its totient is φ = 1331034190.

The previous prime is 1331034181. The next prime is 1331034223. The reversal of 1331034191 is 1914301331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331034191 - 2¹⁰ = 1331033167 is a prime.

It is a super-2 number, since 2×1331034191² = 3543304035222048962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1331034191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331034181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665517095 + 665517096.

It is an arithmetic number, because the mean of its divisors is an integer number (665517096).

Almost surely, 2^1331034191 is an apocalyptic number.

1331034191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331034191 is an equidigital number, since it uses as much as digits as its factorization.

1331034191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1331034191 is about 36483.3412806448. The cubic root of 1331034191 is about 1100.0094189276.

The spelling of 1331034191 in words is "one billion, three hundred thirty-one million, thirty-four thousand, one hundred ninety-one".