3261123509 has 24 divisors (see below), whose sum is σ = 3826952640. Its totient is φ = 2770758144.

The previous prime is 3261123469. The next prime is 3261123533. The reversal of 3261123509 is 9053211623.

It is not a de Polignac number, because 3261123509 - 2⁸ = 3261123253 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261123409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3962072 + ... + 3962894.

It is an arithmetic number, because the mean of its divisors is an integer number (159456360).

Almost surely, 2^3261123509 is an apocalyptic number.

It is an amenable number.

3261123509 is a deficient number, since it is larger than the sum of its proper divisors (565829131).

3261123509 is a wasteful number, since it uses less digits than its factorization.

3261123509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 3261123509 is about 57106.2475478822. The cubic root of 3261123509 is about 1482.9360253536.

The spelling of 3261123509 in words is "three billion, two hundred sixty-one million, one hundred twenty-three thousand, five hundred nine".