23203109987 has 32 divisors (see below), whose sum is σ = 25291284480. Its totient is φ = 21230969760.

The previous prime is 23203109983. The next prime is 23203109999. The reversal of 23203109987 is 78990130232.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23203109987 - 2² = 23203109983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23203109981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10234028 + ... + 10236294.

It is an arithmetic number, because the mean of its divisors is an integer number (790352640).

Almost surely, 2^23203109987 is an apocalyptic number.

23203109987 is a deficient number, since it is larger than the sum of its proper divisors (2088174493).

23203109987 is a wasteful number, since it uses less digits than its factorization.

23203109987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 23203109987 in words is "twenty-three billion, two hundred three million, one hundred nine thousand, nine hundred eighty-seven".