23139141 has 4 divisors (see below), whose sum is σ = 30852192. Its totient is φ = 15426092.

The previous prime is 23139139. The next prime is 23139143. The reversal of 23139141 is 14193132.

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 an interprime number because it is at equal distance from previous prime (23139139) and next prime (23139143).

It is a cyclic number.

It is not a de Polignac number, because 23139141 - 2¹ = 23139139 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23139143) 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, 3856521 + ... + 3856526.

It is an arithmetic number, because the mean of its divisors is an integer number (7713048).

Almost surely, 2^23139141 is an apocalyptic number.

It is an amenable number.

23139141 is a deficient number, since it is larger than the sum of its proper divisors (7713051).

23139141 is an equidigital number, since it uses as much as digits as its factorization.

23139141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7713050.

The product of its digits is 648, while the sum is 24.

The square root of 23139141 is about 4810.3161018794. The cubic root of 23139141 is about 284.9590215013.

The spelling of 23139141 in words is "twenty-three million, one hundred thirty-nine thousand, one hundred forty-one".