321016104 has 24 divisors (see below), whose sum is σ = 869418810. Its totient is φ = 107005344.

The previous prime is 321016103. The next prime is 321016121. The reversal of 321016104 is 401610123.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 320768100 + 248004 = 17910^2 + 498^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (321016103) 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, 2229207 + ... + 2229350.

Almost surely, 2^321016104 is an apocalyptic number.

It is an amenable number.

321016104 is an abundant number, since it is smaller than the sum of its proper divisors (548402706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321016104 is a wasteful number, since it uses less digits than its factorization.

321016104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4458569 (or 4458562 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 321016104 is about 17916.9222803471. The cubic root of 321016104 is about 684.7135776624.

Adding to 321016104 its reverse (401610123), we get a palindrome (722626227).

The spelling of 321016104 in words is "three hundred twenty-one million, sixteen thousand, one hundred four".