123223031 has 2 divisors, whose sum is σ = 123223032. Its totient is φ = 123223030.

The previous prime is 123223007. The next prime is 123223033. The reversal of 123223031 is 130322321.

It is a strong prime.

It is an emirp because it is prime and its reverse (130322321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123223031 - 2¹⁰ = 123222007 is a prime.

It is a super-2 number, since 2×123223031² = 30367830737653922, which contains 22 as substring.

Together with 123223033, 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 (123223033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61611515 + 61611516.

It is an arithmetic number, because the mean of its divisors is an integer number (61611516).

Almost surely, 2^123223031 is an apocalyptic number.

123223031 is a deficient number, since it is larger than the sum of its proper divisors (1).

123223031 is an equidigital number, since it uses as much as digits as its factorization.

123223031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 123223031 is about 11100.5869664626. The cubic root of 123223031 is about 497.6193913942.

Adding to 123223031 its reverse (130322321), we get a palindrome (253545352).

The spelling of 123223031 in words is "one hundred twenty-three million, two hundred twenty-three thousand, thirty-one".