244312109 has 2 divisors, whose sum is σ = 244312110. Its totient is φ = 244312108.

The previous prime is 244312091. The next prime is 244312163. The reversal of 244312109 is 901213442.

Together with previous prime (244312091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244046884 + 265225 = 15622^2 + 515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244312109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244312199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122156054 + 122156055.

It is an arithmetic number, because the mean of its divisors is an integer number (122156055).

Almost surely, 2^244312109 is an apocalyptic number.

It is an amenable number.

244312109 is a deficient number, since it is larger than the sum of its proper divisors (1).

244312109 is an equidigital number, since it uses as much as digits as its factorization.

244312109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 244312109 is about 15630.4865247375. The cubic root of 244312109 is about 625.1462987653.

The spelling of 244312109 in words is "two hundred forty-four million, three hundred twelve thousand, one hundred nine".