23148987 has 4 divisors (see below), whose sum is σ = 30865320. Its totient is φ = 15432656.

The previous prime is 23148967. The next prime is 23149003. The reversal of 23148987 is 78984132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23148987 - 2⁸ = 23148731 is a prime.

It is a super-3 number, since 3×23148987³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (23148907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3858162 + ... + 3858167.

It is an arithmetic number, because the mean of its divisors is an integer number (7716330).

Almost surely, 2^23148987 is an apocalyptic number.

23148987 is a deficient number, since it is larger than the sum of its proper divisors (7716333).

23148987 is an equidigital number, since it uses as much as digits as its factorization.

23148987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7716332.

The product of its digits is 96768, while the sum is 42.

The square root of 23148987 is about 4811.3394184988. The cubic root of 23148987 is about 284.9994336708. Note that the first 3 decimals are identical.

The spelling of 23148987 in words is "twenty-three million, one hundred forty-eight thousand, nine hundred eighty-seven".