321011313 has 16 divisors (see below), whose sum is σ = 489448320. Its totient is φ = 183326976.

The previous prime is 321011311. The next prime is 321011321. The reversal of 321011313 is 313110123.

It is not a de Polignac number, because 321011313 - 2¹ = 321011311 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 321011292 and 321011301.

It is not an unprimeable number, because it can be changed into a prime (321011311) 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, 44281 + ... + 51017.

It is an arithmetic number, because the mean of its divisors is an integer number (30590520).

Almost surely, 2^321011313 is an apocalyptic number.

It is an amenable number.

321011313 is a deficient number, since it is larger than the sum of its proper divisors (168437007).

321011313 is a wasteful number, since it uses less digits than its factorization.

321011313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9016.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 321011313 is about 17916.7885794302. The cubic root of 321011313 is about 684.7101713130.

Adding to 321011313 its reverse (313110123), we get a palindrome (634121436).

The spelling of 321011313 in words is "three hundred twenty-one million, eleven thousand, three hundred thirteen".