201230001 has 48 divisors (see below), whose sum is σ = 346539648. Its totient is φ = 114307200.

The previous prime is 201229997. The next prime is 201230063. The reversal of 201230001 is 100032102.

It is a happy number.

It is not a de Polignac number, because 201230001 - 2² = 201229997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201230801) 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 in 47 ways as a sum of consecutive naturals, for example, 477771 + ... + 478191.

It is an arithmetic number, because the mean of its divisors is an integer number (7219576).

Almost surely, 2^201230001 is an apocalyptic number.

201230001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201230001 is a deficient number, since it is larger than the sum of its proper divisors (145309647).

201230001 is an equidigital number, since it uses as much as digits as its factorization.

201230001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 201230001 is about 14185.5560694673. The cubic root of 201230001 is about 585.9999466117. Note that the first 4 decimals are identical.

Adding to 201230001 its reverse (100032102), we get a palindrome (301262103).

The spelling of 201230001 in words is "two hundred one million, two hundred thirty thousand, one".