123202231 has 2 divisors, whose sum is σ = 123202232. Its totient is φ = 123202230.

The previous prime is 123202223. The next prime is 123202243. The reversal of 123202231 is 132202321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123202231 - 2³ = 123202223 is a prime.

It is a super-2 number, since 2×123202231² = 30357579446754722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123202271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61601115 + 61601116.

It is an arithmetic number, because the mean of its divisors is an integer number (61601116).

Almost surely, 2^123202231 is an apocalyptic number.

123202231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123202231 is an equidigital number, since it uses as much as digits as its factorization.

123202231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 123202231 is about 11099.6500395283. The cubic root of 123202231 is about 497.5913904983.

Adding to 123202231 its reverse (132202321), we get a palindrome (255404552).

The spelling of 123202231 in words is "one hundred twenty-three million, two hundred two thousand, two hundred thirty-one".