210145233 has 4 divisors (see below), whose sum is σ = 280193648. Its totient is φ = 140096820.

The previous prime is 210145217. The next prime is 210145289. The reversal of 210145233 is 332541012.

210145233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 210145233 - 2⁴ = 210145217 is a prime.

It is a super-2 number, since 2×210145233² = 88322037905248578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210145333) 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, 35024203 + ... + 35024208.

It is an arithmetic number, because the mean of its divisors is an integer number (70048412).

Almost surely, 2^210145233 is an apocalyptic number.

It is an amenable number.

210145233 is a deficient number, since it is larger than the sum of its proper divisors (70048415).

210145233 is an equidigital number, since it uses as much as digits as its factorization.

210145233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70048414.

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

The square root of 210145233 is about 14496.3868946714. The cubic root of 210145233 is about 594.5291880841.

Adding to 210145233 its reverse (332541012), we get a palindrome (542686245).

The spelling of 210145233 in words is "two hundred ten million, one hundred forty-five thousand, two hundred thirty-three".