231003121012 has 6 divisors (see below), whose sum is σ = 404255461778. Its totient is φ = 115501560504.

The previous prime is 231003121007. The next prime is 231003121061. The reversal of 231003121012 is 210121300132.

It can be written as a sum of positive squares in only one way, i.e., 198226191076 + 32776929936 = 445226^2 + 181044^2 .

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, 28875390123 + ... + 28875390130.

Almost surely, 2^231003121012 is an apocalyptic number.

It is an amenable number.

231003121012 is a deficient number, since it is larger than the sum of its proper divisors (173252340766).

231003121012 is a wasteful number, since it uses less digits than its factorization.

231003121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57750780257 (or 57750780255 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 231003121012 its reverse (210121300132), we get a palindrome (441124421144).

The spelling of 231003121012 in words is "two hundred thirty-one billion, three million, one hundred twenty-one thousand, twelve".