23631229439 has 4 divisors (see below), whose sum is σ = 23983934424. Its totient is φ = 23278524456.

The previous prime is 23631229421. The next prime is 23631229451. The reversal of 23631229439 is 93492213632.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23631229439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23631229439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23636229439) 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, 176352392 + ... + 176352525.

It is an arithmetic number, because the mean of its divisors is an integer number (5995983606).

Almost surely, 2^23631229439 is an apocalyptic number.

23631229439 is a deficient number, since it is larger than the sum of its proper divisors (352704985).

23631229439 is an equidigital number, since it uses as much as digits as its factorization.

23631229439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352704984.

The product of its digits is 419904, while the sum is 44.

The spelling of 23631229439 in words is "twenty-three billion, six hundred thirty-one million, two hundred twenty-nine thousand, four hundred thirty-nine".