321092961 has 16 divisors (see below), whose sum is σ = 489535488. Its totient is φ = 183387600.

The previous prime is 321092953. The next prime is 321092971. The reversal of 321092961 is 169290123.

It is not a de Polignac number, because 321092961 - 2³ = 321092953 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (321092971) 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, 74146 + ... + 78356.

It is an arithmetic number, because the mean of its divisors is an integer number (30595968).

Almost surely, 2^321092961 is an apocalyptic number.

It is an amenable number.

321092961 is a deficient number, since it is larger than the sum of its proper divisors (168442527).

321092961 is a wasteful number, since it uses less digits than its factorization.

321092961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7852.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 321092961 is about 17919.0669678976. The cubic root of 321092961 is about 684.7682175299.

The spelling of 321092961 in words is "three hundred twenty-one million, ninety-two thousand, nine hundred sixty-one".