201830423 has 2 divisors, whose sum is σ = 201830424. Its totient is φ = 201830422.

The previous prime is 201830411. The next prime is 201830437. The reversal of 201830423 is 324038102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201830423 - 2¹⁰ = 201829399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201830323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100915211 + 100915212.

It is an arithmetic number, because the mean of its divisors is an integer number (100915212).

Almost surely, 2^201830423 is an apocalyptic number.

201830423 is a deficient number, since it is larger than the sum of its proper divisors (1).

201830423 is an equidigital number, since it uses as much as digits as its factorization.

201830423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 201830423 is about 14206.7034529478. The cubic root of 201830423 is about 586.5821956046.

Adding to 201830423 its reverse (324038102), we get a palindrome (525868525).

The spelling of 201830423 in words is "two hundred one million, eight hundred thirty thousand, four hundred twenty-three".