1001134391 has 2 divisors, whose sum is σ = 1001134392. Its totient is φ = 1001134390.

The previous prime is 1001134313. The next prime is 1001134399. The reversal of 1001134391 is 1934311001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001134391 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001134399) 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, 500567195 + 500567196.

It is an arithmetic number, because the mean of its divisors is an integer number (500567196).

Almost surely, 2^1001134391 is an apocalyptic number.

1001134391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001134391 is an equidigital number, since it uses as much as digits as its factorization.

1001134391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1001134391 is about 31640.7078144595. The cubic root of 1001134391 is about 1000.3779874408.

Adding to 1001134391 its reverse (1934311001), we get a palindrome (2935445392).

The spelling of 1001134391 in words is "one billion, one million, one hundred thirty-four thousand, three hundred ninety-one".