321231312322 has 4 divisors (see below), whose sum is σ = 481846968486. Its totient is φ = 160615656160.

The previous prime is 321231312317. The next prime is 321231312329. The reversal of 321231312322 is 223213132123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223213132123 = 126127 ⋅1769749.

It can be written as a sum of positive squares in only one way, i.e., 255228050401 + 66003261921 = 505201^2 + 256911^2 .

It is a super-2 number, since 2×321231312322² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321231312329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80307828079 + ... + 80307828082.

Almost surely, 2^321231312322 is an apocalyptic number.

321231312322 is a deficient number, since it is larger than the sum of its proper divisors (160615656164).

321231312322 is a wasteful number, since it uses less digits than its factorization.

321231312322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160615656163.

The product of its digits is 2592, while the sum is 25.

Adding to 321231312322 its reverse (223213132123), we get a palindrome (544444444445).

The spelling of 321231312322 in words is "three hundred twenty-one billion, two hundred thirty-one million, three hundred twelve thousand, three hundred twenty-two".