23011149 has 32 divisors (see below), whose sum is σ = 38016000. Its totient is φ = 12079872.

The previous prime is 23011141. The next prime is 23011189. The reversal of 23011149 is 94111032.

It is not a de Polignac number, because 23011149 - 2³ = 23011141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23011141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14602 + ... + 16100.

It is an arithmetic number, because the mean of its divisors is an integer number (1188000).

Almost surely, 2^23011149 is an apocalyptic number.

It is an amenable number.

23011149 is a deficient number, since it is larger than the sum of its proper divisors (15004851).

23011149 is a wasteful number, since it uses less digits than its factorization.

23011149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 23011149 is about 4796.9937460872. The cubic root of 23011149 is about 284.4326416826.

The spelling of 23011149 in words is "twenty-three million, eleven thousand, one hundred forty-nine".