23011151 has 4 divisors (see below), whose sum is σ = 23633112. Its totient is φ = 22389192.

The previous prime is 23011141. The next prime is 23011189. The reversal of 23011151 is 15111032.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23011151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23011111) 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, 310925 + ... + 310998.

It is an arithmetic number, because the mean of its divisors is an integer number (5908278).

Almost surely, 2^23011151 is an apocalyptic number.

23011151 is a deficient number, since it is larger than the sum of its proper divisors (621961).

23011151 is an equidigital number, since it uses as much as digits as its factorization.

23011151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621960.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 23011151 is about 4796.9939545511. The cubic root of 23011151 is about 284.4326499230.

Adding to 23011151 its reverse (15111032), we get a palindrome (38122183).

It can be divided in two parts, 2301 and 1151, that multiplied together give a triangular number (2648451 = T₂₃₀₁).

The spelling of 23011151 in words is "twenty-three million, eleven thousand, one hundred fifty-one".