23140493 has 4 divisors (see below), whose sum is σ = 23678688. Its totient is φ = 22602300.

The previous prime is 23140433. The next prime is 23140501. The reversal of 23140493 is 39404132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23140493 - 2¹² = 23136397 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 (23140433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269033 + ... + 269118.

It is an arithmetic number, because the mean of its divisors is an integer number (5919672).

Almost surely, 2^23140493 is an apocalyptic number.

It is an amenable number.

23140493 is a deficient number, since it is larger than the sum of its proper divisors (538195).

23140493 is an equidigital number, since it uses as much as digits as its factorization.

23140493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538194.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 23140493 is about 4810.4566311318. The cubic root of 23140493 is about 284.9645713629.

The spelling of 23140493 in words is "twenty-three million, one hundred forty thousand, four hundred ninety-three".