323309261 has 16 divisors (see below), whose sum is σ = 365008896. Its totient is φ = 283710000.

The previous prime is 323309243. The next prime is 323309267. The reversal of 323309261 is 162903323.

It is a cyclic number.

It is not a de Polignac number, because 323309261 - 2¹⁸ = 323047117 is a prime.

It is a super-2 number, since 2×323309261² = 209057756496732242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323309267) 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, 166466 + ... + 168396.

It is an arithmetic number, because the mean of its divisors is an integer number (22813056).

Almost surely, 2^323309261 is an apocalyptic number.

323309261 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

323309261 is a deficient number, since it is larger than the sum of its proper divisors (41699635).

323309261 is a wasteful number, since it uses less digits than its factorization.

323309261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 323309261 is about 17980.8025682949. The cubic root of 323309261 is about 686.3401126077.

The spelling of 323309261 in words is "three hundred twenty-three million, three hundred nine thousand, two hundred sixty-one".