23181045 has 32 divisors (see below), whose sum is σ = 39360000. Its totient is φ = 11617344.

The previous prime is 23181023. The next prime is 23181071. The reversal of 23181045 is 54018132.

It is not a de Polignac number, because 23181045 - 2¹⁶ = 23115509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46206 + ... + 46704.

It is an arithmetic number, because the mean of its divisors is an integer number (1230000).

Almost surely, 2^23181045 is an apocalyptic number.

It is an amenable number.

23181045 is a deficient number, since it is larger than the sum of its proper divisors (16178955).

23181045 is a wasteful number, since it uses less digits than its factorization.

23181045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 23181045 is about 4814.6697706073. The cubic root of 23181045 is about 285.1309339895.

Adding to 23181045 its reverse (54018132), we get a palindrome (77199177).

The spelling of 23181045 in words is "twenty-three million, one hundred eighty-one thousand, forty-five".