323634961 has 16 divisors (see below), whose sum is σ = 370464640. Its totient is φ = 280247040.

The previous prime is 323634959. The next prime is 323634973. The reversal of 323634961 is 169436323.

323634961 is a nontrivial binomial coefficient, being equal to C(25442, 2).

It is a cyclic number.

It is not a de Polignac number, because 323634961 - 2¹ = 323634959 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 323634961.

It is not an unprimeable number, because it can be changed into a prime (323634901) 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, 19081 + ... + 31801.

It is an arithmetic number, because the mean of its divisors is an integer number (23154040).

Almost surely, 2^323634961 is an apocalyptic number.

323634961 is the 25441-st triangular number and also the 12721-st hexagonal number.

323634961 is the 8481-st centered nonagonal number.

It is an amenable number.

323634961 is a deficient number, since it is larger than the sum of its proper divisors (46829679).

323634961 is a wasteful number, since it uses less digits than its factorization.

323634961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12856.

The product of its digits is 69984, while the sum is 37.

The square root of 323634961 is about 17989.8571700834. The cubic root of 323634961 is about 686.5705070308.

The spelling of 323634961 in words is "three hundred twenty-three million, six hundred thirty-four thousand, nine hundred sixty-one".