201423433 has 2 divisors, whose sum is σ = 201423434. Its totient is φ = 201423432.

The previous prime is 201423407. The next prime is 201423491. The reversal of 201423433 is 334324102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193849929 + 7573504 = 13923^2 + 2752^2 .

It is a cyclic number.

It is not a de Polignac number, because 201423433 - 2¹⁷ = 201292361 is a prime.

It is not a weakly prime, because it can be changed into another prime (201423533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100711716 + 100711717.

It is an arithmetic number, because the mean of its divisors is an integer number (100711717).

Almost surely, 2^201423433 is an apocalyptic number.

It is an amenable number.

201423433 is a deficient number, since it is larger than the sum of its proper divisors (1).

201423433 is an equidigital number, since it uses as much as digits as its factorization.

201423433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 201423433 is about 14192.3723527816. The cubic root of 201423433 is about 586.1876503023.

Adding to 201423433 its reverse (334324102), we get a palindrome (535747535).

The spelling of 201423433 in words is "two hundred one million, four hundred twenty-three thousand, four hundred thirty-three".