231321010188 has 24 divisors (see below), whose sum is σ = 548597370160. Its totient is φ = 75842953920.

The previous prime is 231321010177. The next prime is 231321010189. The reversal of 231321010188 is 881010123132.

It is not an unprimeable number, because it can be changed into a prime (231321010189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158005423 + ... + 158006886.

Almost surely, 2^231321010188 is an apocalyptic number.

It is an amenable number.

231321010188 is an abundant number, since it is smaller than the sum of its proper divisors (317276359972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231321010188 is a wasteful number, since it uses less digits than its factorization.

231321010188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316012377 (or 316012375 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 231321010188 in words is "two hundred thirty-one billion, three hundred twenty-one million, ten thousand, one hundred eighty-eight".