231875013887 has 4 divisors (see below), whose sum is σ = 252954560616. Its totient is φ = 210795467160.

The previous prime is 231875013847. The next prime is 231875013899. The reversal of 231875013887 is 788310578132.

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 231875013887 - 2⁶ = 231875013823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231875013817) 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, 10539773348 + ... + 10539773369.

It is an arithmetic number, because the mean of its divisors is an integer number (63238640154).

Almost surely, 2^231875013887 is an apocalyptic number.

231875013887 is a deficient number, since it is larger than the sum of its proper divisors (21079546729).

231875013887 is a wasteful number, since it uses less digits than its factorization.

231875013887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21079546728.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 231875013887 in words is "two hundred thirty-one billion, eight hundred seventy-five million, thirteen thousand, eight hundred eighty-seven".