23941987 has 2 divisors, whose sum is σ = 23941988. Its totient is φ = 23941986.

The previous prime is 23941963. The next prime is 23942003. The reversal of 23941987 is 78914932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23941987 - 2²³ = 15553379 is a prime.

It is not a weakly prime, because it can be changed into another prime (23941487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11970993 + 11970994.

It is an arithmetic number, because the mean of its divisors is an integer number (11970994).

Almost surely, 2^23941987 is an apocalyptic number.

23941987 is a deficient number, since it is larger than the sum of its proper divisors (1).

23941987 is an equidigital number, since it uses as much as digits as its factorization.

23941987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 23941987 is about 4893.0549761882. The cubic root of 23941987 is about 288.2173120328.

The spelling of 23941987 in words is "twenty-three million, nine hundred forty-one thousand, nine hundred eighty-seven".