320231222222231 has 4 divisors (see below), whose sum is σ = 320244504888600. Its totient is φ = 320217939555864.

The previous prime is 320231222222207. The next prime is 320231222222273. The reversal of 320231222222231 is 132222222132023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320231222222231 is a prime.

It is a super-2 number, since 2×320231222222231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320231222222194 and 320231222222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320231222222281) 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, 6641297021 + ... + 6641345238.

It is an arithmetic number, because the mean of its divisors is an integer number (80061126222150).

Almost surely, 2^{320231222222231} is an apocalyptic number.

320231222222231 is a deficient number, since it is larger than the sum of its proper divisors (13282666369).

320231222222231 is a wasteful number, since it uses less digits than its factorization.

320231222222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13282666368.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 320231222222231 its reverse (132222222132023), we get a palindrome (452453444354254).

The spelling of 320231222222231 in words is "three hundred twenty trillion, two hundred thirty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred thirty-one".