201145233 has 4 divisors (see below), whose sum is σ = 268193648. Its totient is φ = 134096820.

The previous prime is 201145223. The next prime is 201145249. The reversal of 201145233 is 332541102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 201145233 - 2⁶ = 201145169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201145213) 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, 33524203 + ... + 33524208.

It is an arithmetic number, because the mean of its divisors is an integer number (67048412).

Almost surely, 2^201145233 is an apocalyptic number.

It is an amenable number.

201145233 is a deficient number, since it is larger than the sum of its proper divisors (67048415).

201145233 is an equidigital number, since it uses as much as digits as its factorization.

201145233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67048414.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 201145233 is about 14182.5679268601. The cubic root of 201145233 is about 585.9176510297.

Adding to 201145233 its reverse (332541102), we get a palindrome (533686335).

The spelling of 201145233 in words is "two hundred one million, one hundred forty-five thousand, two hundred thirty-three".