321011109 has 6 divisors (see below), whose sum is σ = 463682726. Its totient is φ = 214007400.

The previous prime is 321011101. The next prime is 321011143. The reversal of 321011109 is 901110123.

It can be written as a sum of positive squares in only one way, i.e., 272151009 + 48860100 = 16497^2 + 6990^2 .

It is not a de Polignac number, because 321011109 - 2³ = 321011101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321011091 and 321011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321011101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17833942 + ... + 17833959.

Almost surely, 2^321011109 is an apocalyptic number.

It is an amenable number.

321011109 is a deficient number, since it is larger than the sum of its proper divisors (142671617).

321011109 is a wasteful number, since it uses less digits than its factorization.

321011109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35667907 (or 35667904 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 321011109 is about 17916.7828864448. The cubic root of 321011109 is about 684.7100262704.

The spelling of 321011109 in words is "three hundred twenty-one million, eleven thousand, one hundred nine".