423187733 has 2 divisors, whose sum is σ = 423187734. Its totient is φ = 423187732.

The previous prime is 423187697. The next prime is 423187763. The reversal of 423187733 is 337781324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355586449 + 67601284 = 18857^2 + 8222^2 .

It is a cyclic number.

It is not a de Polignac number, because 423187733 - 2¹⁴ = 423171349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423187763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211593866 + 211593867.

It is an arithmetic number, because the mean of its divisors is an integer number (211593867).

Almost surely, 2^423187733 is an apocalyptic number.

It is an amenable number.

423187733 is a deficient number, since it is larger than the sum of its proper divisors (1).

423187733 is an equidigital number, since it uses as much as digits as its factorization.

423187733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 38.

The square root of 423187733 is about 20571.5272403388. The cubic root of 423187733 is about 750.7771103730. Note that the first 3 decimals are identical.

The spelling of 423187733 in words is "four hundred twenty-three million, one hundred eighty-seven thousand, seven hundred thirty-three".