321312104 has 16 divisors (see below), whose sum is σ = 637899300. Its totient is φ = 151205632.

The previous prime is 321312091. The next prime is 321312113. The reversal of 321312104 is 401213123.

It can be written as a sum of positive squares in 2 ways, for example, as 306180004 + 15132100 = 17498^2 + 3890^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1181159 + ... + 1181430.

Almost surely, 2^321312104 is an apocalyptic number.

321312104 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

321312104 is a deficient number, since it is larger than the sum of its proper divisors (316587196).

321312104 is a wasteful number, since it uses less digits than its factorization.

321312104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362612 (or 2362608 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 321312104 is about 17925.1807243330. The cubic root of 321312104 is about 684.9239647786.

Adding to 321312104 its reverse (401213123), we get a palindrome (722525227).

The spelling of 321312104 in words is "three hundred twenty-one million, three hundred twelve thousand, one hundred four".