23132261 has 2 divisors, whose sum is σ = 23132262. Its totient is φ = 23132260.

The previous prime is 23132251. The next prime is 23132267. The reversal of 23132261 is 16223132.

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., 17222500 + 5909761 = 4150^2 + 2431^2 .

It is a cyclic number.

It is not a de Polignac number, because 23132261 - 2¹⁴ = 23115877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23132267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11566130 + 11566131.

It is an arithmetic number, because the mean of its divisors is an integer number (11566131).

Almost surely, 2^23132261 is an apocalyptic number.

It is an amenable number.

23132261 is a deficient number, since it is larger than the sum of its proper divisors (1).

23132261 is an equidigital number, since it uses as much as digits as its factorization.

23132261 is an evil number, because the sum of its binary digits is even.

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

The square root of 23132261 is about 4809.6009189953. The cubic root of 23132261 is about 284.9307762521.

Adding to 23132261 its reverse (16223132), we get a palindrome (39355393).

The spelling of 23132261 in words is "twenty-three million, one hundred thirty-two thousand, two hundred sixty-one".