23139061 has 8 divisors (see below), whose sum is σ = 25285248. Its totient is φ = 21000000.

The previous prime is 23139043. The next prime is 23139119. The reversal of 23139061 is 16093132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 6-Lehmer number, since φ(23139061) divides (23139061-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 23139061 - 2¹³ = 23130869 is a prime.

It is a super-2 number, since 2×23139061² = 1070832287923442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23139041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6861 + ... + 9661.

It is an arithmetic number, because the mean of its divisors is an integer number (3160656).

Almost surely, 2^23139061 is an apocalyptic number.

It is an amenable number.

23139061 is a deficient number, since it is larger than the sum of its proper divisors (2146187).

23139061 is a wasteful number, since it uses less digits than its factorization.

23139061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3563.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 23139061 is about 4810.3077864103. The cubic root of 23139061 is about 284.9586931003.

The spelling of 23139061 in words is "twenty-three million, one hundred thirty-nine thousand, sixty-one".