331123223 has 2 divisors, whose sum is σ = 331123224. Its totient is φ = 331123222.

The previous prime is 331123193. The next prime is 331123259. The reversal of 331123223 is 322321133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331123223 - 2¹² = 331119127 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 331123195 and 331123204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331123283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165561611 + 165561612.

It is an arithmetic number, because the mean of its divisors is an integer number (165561612).

Almost surely, 2^331123223 is an apocalyptic number.

331123223 is a deficient number, since it is larger than the sum of its proper divisors (1).

331123223 is an equidigital number, since it uses as much as digits as its factorization.

331123223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 20.

The square root of 331123223 is about 18196.7915578544. The cubic root of 331123223 is about 691.8254701188.

Adding to 331123223 its reverse (322321133), we get a palindrome (653444356).

The spelling of 331123223 in words is "three hundred thirty-one million, one hundred twenty-three thousand, two hundred twenty-three".