261336322 has 32 divisors (see below), whose sum is σ = 437315760. Its totient is φ = 116363520.

The previous prime is 261336319. The next prime is 261336331. The reversal of 261336322 is 223633162.

261336322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 13242321 + 248094001 = 3639^2 + 15751^2 .

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, 82504 + ... + 85612.

Almost surely, 2^261336322 is an apocalyptic number.

261336322 is a deficient number, since it is larger than the sum of its proper divisors (175979438).

261336322 is a wasteful number, since it uses less digits than its factorization.

261336322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238.

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

The square root of 261336322 is about 16165.8999749473. The cubic root of 261336322 is about 639.3420337559.

Adding to 261336322 its reverse (223633162), we get a palindrome (484969484).

The spelling of 261336322 in words is "two hundred sixty-one million, three hundred thirty-six thousand, three hundred twenty-two".