2321640109 has 2 divisors, whose sum is σ = 2321640110. Its totient is φ = 2321640108.

The previous prime is 2321640107. The next prime is 2321640151. The reversal of 2321640109 is 9010461232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1946133225 + 375506884 = 44115^2 + 19378^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321640109 - 2¹ = 2321640107 is a prime.

Together with 2321640107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2321640103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160820054 + 1160820055.

It is an arithmetic number, because the mean of its divisors is an integer number (1160820055).

Almost surely, 2^2321640109 is an apocalyptic number.

It is an amenable number.

2321640109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321640109 is an equidigital number, since it uses as much as digits as its factorization.

2321640109 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2321640109 is about 48183.4007620882. The cubic root of 2321640109 is about 1324.1330717327.

The spelling of 2321640109 in words is "two billion, three hundred twenty-one million, six hundred forty thousand, one hundred nine".