231031130122 has 8 divisors (see below), whose sum is σ = 373204133316. Its totient is φ = 106629752352.

The previous prime is 231031130111. The next prime is 231031130123. The reversal of 231031130122 is 221031130132.

It can be written as a sum of positive squares in 2 ways, for example, as 230908119841 + 123010281 = 480529^2 + 11091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 231031130122.

It is not an unprimeable number, because it can be changed into a prime (231031130123) 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, 4442906323 + ... + 4442906374.

Almost surely, 2^231031130122 is an apocalyptic number.

231031130122 is a deficient number, since it is larger than the sum of its proper divisors (142173003194).

231031130122 is a wasteful number, since it uses less digits than its factorization.

231031130122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8885812712.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 231031130122 its reverse (221031130132), we get a palindrome (452062260254).

The spelling of 231031130122 in words is "two hundred thirty-one billion, thirty-one million, one hundred thirty thousand, one hundred twenty-two".