261236323 has 8 divisors (see below), whose sum is σ = 272816928. Its totient is φ = 249674304.

The previous prime is 261236303. The next prime is 261236341. The reversal of 261236323 is 323632162.

261236323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261236323 - 2⁵ = 261236291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261236291 and 261236300.

It is not an unprimeable number, because it can be changed into a prime (261236303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29511 + ... + 37327.

It is an arithmetic number, because the mean of its divisors is an integer number (34102116).

Almost surely, 2^261236323 is an apocalyptic number.

261236323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

261236323 is a deficient number, since it is larger than the sum of its proper divisors (11580605).

261236323 is a wasteful number, since it uses less digits than its factorization.

261236323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9293.

The product of its digits is 7776, while the sum is 28.

The square root of 261236323 is about 16162.8067797645. The cubic root of 261236323 is about 639.2604763718.

Adding to 261236323 its reverse (323632162), we get a palindrome (584868485).

The spelling of 261236323 in words is "two hundred sixty-one million, two hundred thirty-six thousand, three hundred twenty-three".