244311391 has 2 divisors, whose sum is σ = 244311392. Its totient is φ = 244311390.

The previous prime is 244311383. The next prime is 244311421. The reversal of 244311391 is 193113442.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 244311391 - 2³ = 244311383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244311091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122155695 + 122155696.

It is an arithmetic number, because the mean of its divisors is an integer number (122155696).

Almost surely, 2^244311391 is an apocalyptic number.

244311391 is a deficient number, since it is larger than the sum of its proper divisors (1).

244311391 is an equidigital number, since it uses as much as digits as its factorization.

244311391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 244311391 is about 15630.4635567855. The cubic root of 244311391 is about 625.1456863581.

The spelling of 244311391 in words is "two hundred forty-four million, three hundred eleven thousand, three hundred ninety-one".