623242229 has 2 divisors, whose sum is σ = 623242230. Its totient is φ = 623242228.

The previous prime is 623242183. The next prime is 623242267. The reversal of 623242229 is 922242326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 553519729 + 69722500 = 23527^2 + 8350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623242229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 623242195 and 623242204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623242289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311621114 + 311621115.

It is an arithmetic number, because the mean of its divisors is an integer number (311621115).

Almost surely, 2^623242229 is an apocalyptic number.

It is an amenable number.

623242229 is a deficient number, since it is larger than the sum of its proper divisors (1).

623242229 is an equidigital number, since it uses as much as digits as its factorization.

623242229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 623242229 is about 24964.8198271087. The cubic root of 623242229 is about 854.1856884420.

The spelling of 623242229 in words is "six hundred twenty-three million, two hundred forty-two thousand, two hundred twenty-nine".