2320402261 has 2 divisors, whose sum is σ = 2320402262. Its totient is φ = 2320402260.

The previous prime is 2320402243. The next prime is 2320402283. The reversal of 2320402261 is 1622040232.

It is an a-pointer prime, because the next prime (2320402283) can be obtained adding 2320402261 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2320348900 + 53361 = 48170^2 + 231^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320402261 - 2¹⁷ = 2320271189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2320402211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160201130 + 1160201131.

It is an arithmetic number, because the mean of its divisors is an integer number (1160201131).

Almost surely, 2^2320402261 is an apocalyptic number.

It is an amenable number.

2320402261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2320402261 is an equidigital number, since it uses as much as digits as its factorization.

2320402261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2320402261 is about 48170.5538788999. The cubic root of 2320402261 is about 1323.8976969128.

Adding to 2320402261 its reverse (1622040232), we get a palindrome (3942442493).

The spelling of 2320402261 in words is "two billion, three hundred twenty million, four hundred two thousand, two hundred sixty-one".