23139367 has 2 divisors, whose sum is σ = 23139368. Its totient is φ = 23139366.

The previous prime is 23139307. The next prime is 23139371. The reversal of 23139367 is 76393132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23139367 is a prime.

It is a super-4 number, since 4×23139367⁴ (a number of 31 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23139307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11569683 + 11569684.

It is an arithmetic number, because the mean of its divisors is an integer number (11569684).

Almost surely, 2^23139367 is an apocalyptic number.

23139367 is a deficient number, since it is larger than the sum of its proper divisors (1).

23139367 is an equidigital number, since it uses as much as digits as its factorization.

23139367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 34.

The square root of 23139367 is about 4810.3395930017. The cubic root of 23139367 is about 284.9599492299.

The spelling of 23139367 in words is "twenty-three million, one hundred thirty-nine thousand, three hundred sixty-seven".