23071261 has 12 divisors (see below), whose sum is σ = 24851772. Its totient is φ = 21343616.

The previous prime is 23071247. The next prime is 23071273. The reversal of 23071261 is 16217032.

It can be written as a sum of positive squares in 2 ways, for example, as 20839225 + 2232036 = 4565^2 + 1494^2 .

It is not a de Polignac number, because 23071261 - 2⁵ = 23071229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23071241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117015 + ... + 117211.

It is an arithmetic number, because the mean of its divisors is an integer number (2070981).

Almost surely, 2^23071261 is an apocalyptic number.

It is an amenable number.

23071261 is a deficient number, since it is larger than the sum of its proper divisors (1780511).

23071261 is an equidigital number, since it uses as much as digits as its factorization.

23071261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 23071261 is about 4803.2552503485. The cubic root of 23071261 is about 284.6801006908.

Adding to 23071261 its reverse (16217032), we get a palindrome (39288293).

It can be divided in two parts, 23071 and 261, that added together give a palindrome (23332).

The spelling of 23071261 in words is "twenty-three million, seventy-one thousand, two hundred sixty-one".