23706139 has 2 divisors, whose sum is σ = 23706140. Its totient is φ = 23706138.

The previous prime is 23706131. The next prime is 23706161. The reversal of 23706139 is 93160732.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23706139 - 2³ = 23706131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23706139.

It is not a weakly prime, because it can be changed into another prime (23706131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11853069 + 11853070.

It is an arithmetic number, because the mean of its divisors is an integer number (11853070).

Almost surely, 2^23706139 is an apocalyptic number.

23706139 is a deficient number, since it is larger than the sum of its proper divisors (1).

23706139 is an equidigital number, since it uses as much as digits as its factorization.

23706139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 23706139 is about 4868.8950491872. The cubic root of 23706139 is about 287.2677958718.

The spelling of 23706139 in words is "twenty-three million, seven hundred six thousand, one hundred thirty-nine".