23321261 has 2 divisors, whose sum is σ = 23321262. Its totient is φ = 23321260.

The previous prime is 23321231. The next prime is 23321273. The reversal of 23321261 is 16212332.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14969161 + 8352100 = 3869^2 + 2890^2 .

It is a cyclic number.

It is not a de Polignac number, because 23321261 - 2¹⁰ = 23320237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23321201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11660630 + 11660631.

It is an arithmetic number, because the mean of its divisors is an integer number (11660631).

Almost surely, 2^23321261 is an apocalyptic number.

It is an amenable number.

23321261 is a deficient number, since it is larger than the sum of its proper divisors (1).

23321261 is an equidigital number, since it uses as much as digits as its factorization.

23321261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 20.

The square root of 23321261 is about 4829.2091485045. The cubic root of 23321261 is about 285.7046725694.

Adding to 23321261 its reverse (16212332), we get a palindrome (39533593).

The spelling of 23321261 in words is "twenty-three million, three hundred twenty-one thousand, two hundred sixty-one".