261123335 has 16 divisors (see below), whose sum is σ = 345036672. Its totient is φ = 188128800.

The previous prime is 261123311. The next prime is 261123367. The reversal of 261123335 is 533321162.

261123335 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 261123335 - 2¹⁰ = 261122311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16301 + ... + 28070.

It is an arithmetic number, because the mean of its divisors is an integer number (21564792).

Almost surely, 2^261123335 is an apocalyptic number.

261123335 is a deficient number, since it is larger than the sum of its proper divisors (83913337).

261123335 is a wasteful number, since it uses less digits than its factorization.

261123335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44494.

The product of its digits is 3240, while the sum is 26.

The square root of 261123335 is about 16159.3110929891. The cubic root of 261123335 is about 639.1683003456.

Adding to 261123335 its reverse (533321162), we get a palindrome (794444497).

The spelling of 261123335 in words is "two hundred sixty-one million, one hundred twenty-three thousand, three hundred thirty-five".