23671987 has 2 divisors, whose sum is σ = 23671988. Its totient is φ = 23671986.

The previous prime is 23671981. The next prime is 23671997. The reversal of 23671987 is 78917632.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23671987 - 2¹¹ = 23669939 is a prime.

It is not a weakly prime, because it can be changed into another prime (23671981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11835993 + 11835994.

It is an arithmetic number, because the mean of its divisors is an integer number (11835994).

Almost surely, 2^23671987 is an apocalyptic number.

23671987 is a deficient number, since it is larger than the sum of its proper divisors (1).

23671987 is an equidigital number, since it uses as much as digits as its factorization.

23671987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 23671987 is about 4865.3866238974. The cubic root of 23671987 is about 287.1297797965.

The spelling of 23671987 in words is "twenty-three million, six hundred seventy-one thousand, nine hundred eighty-seven".