23631543913 has 4 divisors (see below), whose sum is σ = 24659002368. Its totient is φ = 22604085460.

The previous prime is 23631543907. The next prime is 23631543919. The reversal of 23631543913 is 31934513632.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (23631543907) and next prime (23631543919).

It is a cyclic number.

It is not a de Polignac number, because 23631543913 - 2³³ = 15041609321 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23631543919) 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, 513729193 + ... + 513729238.

It is an arithmetic number, because the mean of its divisors is an integer number (6164750592).

Almost surely, 2^23631543913 is an apocalyptic number.

23631543913 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23631543913 is a deficient number, since it is larger than the sum of its proper divisors (1027458455).

23631543913 is a wasteful number, since it uses less digits than its factorization.

23631543913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027458454.

The product of its digits is 174960, while the sum is 40.

The spelling of 23631543913 in words is "twenty-three billion, six hundred thirty-one million, five hundred forty-three thousand, nine hundred thirteen".