201230290 has 8 divisors (see below), whose sum is σ = 362214540. Its totient is φ = 80492112.

The previous prime is 201230219. The next prime is 201230291. The reversal of 201230290 is 92032102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 190081369 + 11148921 = 13787^2 + 3339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×201230290² = 80987259226968200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201230291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10061505 + ... + 10061524.

Almost surely, 2^201230290 is an apocalyptic number.

201230290 is a deficient number, since it is larger than the sum of its proper divisors (160984250).

201230290 is a wasteful number, since it uses less digits than its factorization.

201230290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20123036.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 201230290 is about 14185.5662558814. The cubic root of 201230290 is about 586.0002271429. Note that the first 3 decimals are identical.

Adding to 201230290 its reverse (92032102), we get a palindrome (293262392).

The spelling of 201230290 in words is "two hundred one million, two hundred thirty thousand, two hundred ninety".