3261223231 has 16 divisors (see below), whose sum is σ = 3750163200. Its totient is φ = 2778101568.

The previous prime is 3261223223. The next prime is 3261223247. The reversal of 3261223231 is 1323221623.

It is a cyclic number.

It is not a de Polignac number, because 3261223231 - 2³ = 3261223223 is a prime.

It is a super-2 number, since 2×3261223231² = 21271153924828158722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3261223196 and 3261223205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261223331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 828075 + ... + 832003.

It is an arithmetic number, because the mean of its divisors is an integer number (234385200).

Almost surely, 2^3261223231 is an apocalyptic number.

3261223231 is a deficient number, since it is larger than the sum of its proper divisors (488939969).

3261223231 is a wasteful number, since it uses less digits than its factorization.

3261223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4638.

The product of its digits is 2592, while the sum is 25.

The square root of 3261223231 is about 57107.1206680918. The cubic root of 3261223231 is about 1482.9511407822.

Adding to 3261223231 its reverse (1323221623), we get a palindrome (4584444854).

The spelling of 3261223231 in words is "three billion, two hundred sixty-one million, two hundred twenty-three thousand, two hundred thirty-one".