1391104523 has 2 divisors, whose sum is σ = 1391104524. Its totient is φ = 1391104522.

The previous prime is 1391104511. The next prime is 1391104529. The reversal of 1391104523 is 3254011931.

It is a strong prime.

It is an emirp because it is prime and its reverse (3254011931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1391104523 - 2¹⁰ = 1391103499 is a prime.

It is a super-2 number, since 2×1391104523² = 3870343587822115058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1391104529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695552261 + 695552262.

It is an arithmetic number, because the mean of its divisors is an integer number (695552262).

Almost surely, 2^1391104523 is an apocalyptic number.

1391104523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1391104523 is an equidigital number, since it uses as much as digits as its factorization.

1391104523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1391104523 is about 37297.5136302676. The cubic root of 1391104523 is about 1116.3145556594.

The spelling of 1391104523 in words is "one billion, three hundred ninety-one million, one hundred four thousand, five hundred twenty-three".