163320201923231 has 2 divisors, whose sum is σ = 163320201923232. Its totient is φ = 163320201923230.

The previous prime is 163320201923209. The next prime is 163320201923269. The reversal of 163320201923231 is 132329102023361.

It is an a-pointer prime, because the next prime (163320201923269) can be obtained adding 163320201923231 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163320201923231 - 2²² = 163320197728927 is a prime.

It is a super-2 number, since 2×163320201923231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163320201929231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81660100961615 + 81660100961616.

It is an arithmetic number, because the mean of its divisors is an integer number (81660100961616).

Almost surely, 2^{163320201923231} is an apocalyptic number.

163320201923231 is a deficient number, since it is larger than the sum of its proper divisors (1).

163320201923231 is an equidigital number, since it uses as much as digits as its factorization.

163320201923231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 38.

Adding to 163320201923231 its reverse (132329102023361), we get a palindrome (295649303946592).

The spelling of 163320201923231 in words is "one hundred sixty-three trillion, three hundred twenty billion, two hundred one million, nine hundred twenty-three thousand, two hundred thirty-one".