1004101391 has 2 divisors, whose sum is σ = 1004101392. Its totient is φ = 1004101390.

The previous prime is 1004101387. The next prime is 1004101393. The reversal of 1004101391 is 1931014001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1004101391 - 2² = 1004101387 is a prime.

Together with 1004101393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004101393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502050695 + 502050696.

It is an arithmetic number, because the mean of its divisors is an integer number (502050696).

Almost surely, 2^1004101391 is an apocalyptic number.

1004101391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004101391 is an equidigital number, since it uses as much as digits as its factorization.

1004101391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1004101391 is about 31687.5589309117. The cubic root of 1004101391 is about 1001.3652655351.

Adding to 1004101391 its reverse (1931014001), we get a palindrome (2935115392).

The spelling of 1004101391 in words is "one billion, four million, one hundred one thousand, three hundred ninety-one".