231123130212 has 24 divisors (see below), whose sum is σ = 580770942976. Its totient is φ = 71114809248.

The previous prime is 231123130211. The next prime is 231123130229. The reversal of 231123130212 is 212031321132.

It is not an unprimeable number, because it can be changed into a prime (231123130211) 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, 740779108 + ... + 740779419.

Almost surely, 2^231123130212 is an apocalyptic number.

It is an amenable number.

231123130212 is an abundant number, since it is smaller than the sum of its proper divisors (349647812764).

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

231123130212 is a wasteful number, since it uses less digits than its factorization.

231123130212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481558547 (or 1481558545 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 231123130212 its reverse (212031321132), we get a palindrome (443154451344).

The spelling of 231123130212 in words is "two hundred thirty-one billion, one hundred twenty-three million, one hundred thirty thousand, two hundred twelve".