231853751189 has 4 divisors (see below), whose sum is σ = 233055066156. Its totient is φ = 230652436224.

The previous prime is 231853751123. The next prime is 231853751191. The reversal of 231853751189 is 981157358132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 71339739025 + 160514012164 = 267095^2 + 400642^2 .

It is a cyclic number.

It is not a de Polignac number, because 231853751189 - 2³⁶ = 163134274453 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 231853751189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231853351189) 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, 600657194 + ... + 600657579.

It is an arithmetic number, because the mean of its divisors is an integer number (58263766539).

Almost surely, 2^231853751189 is an apocalyptic number.

It is an amenable number.

231853751189 is a deficient number, since it is larger than the sum of its proper divisors (1201314967).

231853751189 is a wasteful number, since it uses less digits than its factorization.

231853751189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201314966.

The product of its digits is 1814400, while the sum is 53.

The spelling of 231853751189 in words is "two hundred thirty-one billion, eight hundred fifty-three million, seven hundred fifty-one thousand, one hundred eighty-nine".