231202130312 has 8 divisors (see below), whose sum is σ = 433503994350. Its totient is φ = 115601065152.

The previous prime is 231202130281. The next prime is 231202130323. The reversal of 231202130312 is 213031202132.

It can be written as a sum of positive squares in only one way, i.e., 190258226596 + 40943903716 = 436186^2 + 202346^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14450133137 + ... + 14450133152.

Almost surely, 2^231202130312 is an apocalyptic number.

It is an amenable number.

231202130312 is a deficient number, since it is larger than the sum of its proper divisors (202301864038).

231202130312 is a wasteful number, since it uses less digits than its factorization.

231202130312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28900266295 (or 28900266291 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231202130312 its reverse (213031202132), we get a palindrome (444233332444).

The spelling of 231202130312 in words is "two hundred thirty-one billion, two hundred two million, one hundred thirty thousand, three hundred twelve".