322400231 has 2 divisors, whose sum is σ = 322400232. Its totient is φ = 322400230.

The previous prime is 322400209. The next prime is 322400233. The reversal of 322400231 is 132004223.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-322400231 is a prime.

It is a super-2 number, since 2×322400231² = 207883817897706722, which contains 22 as substring.

Together with 322400233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322400233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161200115 + 161200116.

It is an arithmetic number, because the mean of its divisors is an integer number (161200116).

Almost surely, 2^322400231 is an apocalyptic number.

322400231 is a deficient number, since it is larger than the sum of its proper divisors (1).

322400231 is an equidigital number, since it uses as much as digits as its factorization.

322400231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 322400231 is about 17955.5069825388. The cubic root of 322400231 is about 685.6962611685.

Adding to 322400231 its reverse (132004223), we get a palindrome (454404454).

The spelling of 322400231 in words is "three hundred twenty-two million, four hundred thousand, two hundred thirty-one".