1047361391 has 2 divisors, whose sum is σ = 1047361392. Its totient is φ = 1047361390.

The previous prime is 1047361321. The next prime is 1047361411. The reversal of 1047361391 is 1931637401.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1047361391 - 2¹⁰ = 1047360367 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 (1047361321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523680695 + 523680696.

It is an arithmetic number, because the mean of its divisors is an integer number (523680696).

Almost surely, 2^1047361391 is an apocalyptic number.

1047361391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047361391 is an equidigital number, since it uses as much as digits as its factorization.

1047361391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1047361391 is about 32362.9632604927. The cubic root of 1047361391 is about 1015.5442545302.

Adding to 1047361391 its reverse (1931637401), we get a palindrome (2978998792).

The spelling of 1047361391 in words is "one billion, forty-seven million, three hundred sixty-one thousand, three hundred ninety-one".