423323293 has 2 divisors, whose sum is σ = 423323294. Its totient is φ = 423323292.

The previous prime is 423323227. The next prime is 423323309. The reversal of 423323293 is 392323324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383102329 + 40220964 = 19573^2 + 6342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423323293 is a prime.

It is a super-2 number, since 2×423323293² = 358405220792727698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423323093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211661646 + 211661647.

It is an arithmetic number, because the mean of its divisors is an integer number (211661647).

Almost surely, 2^423323293 is an apocalyptic number.

It is an amenable number.

423323293 is a deficient number, since it is larger than the sum of its proper divisors (1).

423323293 is an equidigital number, since it uses as much as digits as its factorization.

423323293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 31.

The square root of 423323293 is about 20574.8218218287. The cubic root of 423323293 is about 750.8572674537.

Adding to 423323293 its sum of digits (31), we get a palindrome (423323324).

The spelling of 423323293 in words is "four hundred twenty-three million, three hundred twenty-three thousand, two hundred ninety-three".