231869255218 has 96 divisors (see below), whose sum is σ = 393568616448. Its totient is φ = 102215097600.

The previous prime is 231869255213. The next prime is 231869255231. The reversal of 231869255218 is 812552968132.

It is not an unprimeable number, because it can be changed into a prime (231869255213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157626223 + ... + 157627693.

It is an arithmetic number, because the mean of its divisors is an integer number (4099673088).

Almost surely, 2^231869255218 is an apocalyptic number.

231869255218 is a deficient number, since it is larger than the sum of its proper divisors (161699361230).

231869255218 is a wasteful number, since it uses less digits than its factorization.

231869255218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768 (or 1751 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 52.

The spelling of 231869255218 in words is "two hundred thirty-one billion, eight hundred sixty-nine million, two hundred fifty-five thousand, two hundred eighteen".