20233151 has 4 divisors (see below), whose sum is σ = 20564904. Its totient is φ = 19901400.

The previous prime is 20233141. The next prime is 20233153. The reversal of 20233151 is 15133202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20233151 - 2¹⁰ = 20232127 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20233153) 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 3 ways as a sum of consecutive naturals, for example, 165785 + ... + 165906.

It is an arithmetic number, because the mean of its divisors is an integer number (5141226).

Almost surely, 2^20233151 is an apocalyptic number.

20233151 is a deficient number, since it is larger than the sum of its proper divisors (331753).

20233151 is an equidigital number, since it uses as much as digits as its factorization.

20233151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331752.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20233151 is about 4498.1274993046. The cubic root of 20233151 is about 272.4924712450.

Adding to 20233151 its reverse (15133202), we get a palindrome (35366353).

The spelling of 20233151 in words is "twenty million, two hundred thirty-three thousand, one hundred fifty-one".