321433442331 has 4 divisors (see below), whose sum is σ = 428577923112. Its totient is φ = 214288961552.

The previous prime is 321433442263. The next prime is 321433442339. The reversal of 321433442331 is 133244334123.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321433442331 - 2¹¹ = 321433440283 is a prime.

It is a super-2 number, since 2×321433442331² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321433442292 and 321433442301.

It is not an unprimeable number, because it can be changed into a prime (321433442339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53572240386 + ... + 53572240391.

It is an arithmetic number, because the mean of its divisors is an integer number (107144480778).

Almost surely, 2^321433442331 is an apocalyptic number.

321433442331 is a deficient number, since it is larger than the sum of its proper divisors (107144480781).

321433442331 is a wasteful number, since it uses less digits than its factorization.

321433442331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107144480780.

The product of its digits is 62208, while the sum is 33.

Adding to 321433442331 its reverse (133244334123), we get a palindrome (454677776454).

The spelling of 321433442331 in words is "three hundred twenty-one billion, four hundred thirty-three million, four hundred forty-two thousand, three hundred thirty-one".