23140281 has 16 divisors (see below), whose sum is σ = 33554304. Its totient is φ = 14125824.

The previous prime is 23140279. The next prime is 23140283. The reversal of 23140281 is 18204132.

It is an interprime number because it is at equal distance from previous prime (23140279) and next prime (23140283).

It is not a de Polignac number, because 23140281 - 2¹ = 23140279 is a prime.

It is a super-2 number, since 2×23140281² = 1070945209517922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23140283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4245 + ... + 8018.

It is an arithmetic number, because the mean of its divisors is an integer number (2097144).

Almost surely, 2^23140281 is an apocalyptic number.

It is an amenable number.

23140281 is a deficient number, since it is larger than the sum of its proper divisors (10414023).

23140281 is a wasteful number, since it uses less digits than its factorization.

23140281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12320.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 23140281 is about 4810.4345957512. The cubic root of 23140281 is about 284.9637011326.

The spelling of 23140281 in words is "twenty-three million, one hundred forty thousand, two hundred eighty-one".