1353240391 has 2 divisors, whose sum is σ = 1353240392. Its totient is φ = 1353240390.

The previous prime is 1353240373. The next prime is 1353240419. The reversal of 1353240391 is 1930423531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1353240391 - 2⁵ = 1353240359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1353240491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676620195 + 676620196.

It is an arithmetic number, because the mean of its divisors is an integer number (676620196).

Almost surely, 2^1353240391 is an apocalyptic number.

1353240391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1353240391 is an equidigital number, since it uses as much as digits as its factorization.

1353240391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 1353240391 is about 36786.4158487885. The cubic root of 1353240391 is about 1106.0930172894.

The spelling of 1353240391 in words is "one billion, three hundred fifty-three million, two hundred forty thousand, three hundred ninety-one".