2320123261 has 2 divisors, whose sum is σ = 2320123262. Its totient is φ = 2320123260.

The previous prime is 2320123259. The next prime is 2320123313. The reversal of 2320123261 is 1623210232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2319867225 + 256036 = 48165^2 + 506^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320123261 - 2¹ = 2320123259 is a prime.

Together with 2320123259, 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 (2320123061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160061630 + 1160061631.

It is an arithmetic number, because the mean of its divisors is an integer number (1160061631).

Almost surely, 2^2320123261 is an apocalyptic number.

It is an amenable number.

2320123261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2320123261 is an equidigital number, since it uses as much as digits as its factorization.

2320123261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2320123261 is about 48167.6578317858. The cubic root of 2320123261 is about 1323.8446339492.

Adding to 2320123261 its reverse (1623210232), we get a palindrome (3943333493).

The spelling of 2320123261 in words is "two billion, three hundred twenty million, one hundred twenty-three thousand, two hundred sixty-one".