1331340029 has 2 divisors, whose sum is σ = 1331340030. Its totient is φ = 1331340028.

The previous prime is 1331339983. The next prime is 1331340037. The reversal of 1331340029 is 9200431331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 815959225 + 515380804 = 28565^2 + 22702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331340029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331340629) 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, 665670014 + 665670015.

It is an arithmetic number, because the mean of its divisors is an integer number (665670015).

Almost surely, 2^1331340029 is an apocalyptic number.

It is an amenable number.

1331340029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331340029 is an equidigital number, since it uses as much as digits as its factorization.

1331340029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1331340029 is about 36487.5325145453. The cubic root of 1331340029 is about 1100.0936639252.

The spelling of 1331340029 in words is "one billion, three hundred thirty-one million, three hundred forty thousand, twenty-nine".