231143044312 has 8 divisors (see below), whose sum is σ = 433393208100. Its totient is φ = 115571522152.

The previous prime is 231143044283. The next prime is 231143044367. The reversal of 231143044312 is 213440341132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14446440262 + ... + 14446440277.

Almost surely, 2^231143044312 is an apocalyptic number.

It is an amenable number.

231143044312 is a deficient number, since it is larger than the sum of its proper divisors (202250163788).

231143044312 is a wasteful number, since it uses less digits than its factorization.

231143044312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28892880545 (or 28892880541 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 231143044312 its reverse (213440341132), we get a palindrome (444583385444).

The spelling of 231143044312 in words is "two hundred thirty-one billion, one hundred forty-three million, forty-four thousand, three hundred twelve".