321313433 has 12 divisors (see below), whose sum is σ = 382891572. Its totient is φ = 268692480.

The previous prime is 321313423. The next prime is 321313451. The reversal of 321313433 is 334313123.

It can be written as a sum of positive squares in 2 ways, for example, as 128436889 + 192876544 = 11333^2 + 13888^2 .

It is a de Polignac number, because none of the positive numbers 2^k-321313433 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 321313399 and 321313408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321313423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77960 + ... + 81977.

It is an arithmetic number, because the mean of its divisors is an integer number (31907631).

Almost surely, 2^321313433 is an apocalyptic number.

It is an amenable number.

321313433 is a deficient number, since it is larger than the sum of its proper divisors (61578139).

321313433 is a wasteful number, since it uses less digits than its factorization.

321313433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159992 (or 159985 counting only the distinct ones).

The product of its digits is 1944, while the sum is 23.

The square root of 321313433 is about 17925.2177950506. The cubic root of 321313433 is about 684.9249090969.

Adding to 321313433 its reverse (334313123), we get a palindrome (655626556).

The spelling of 321313433 in words is "three hundred twenty-one million, three hundred thirteen thousand, four hundred thirty-three".