231312000321 has 16 divisors (see below), whose sum is σ = 343921584000. Its totient is φ = 153651287664.

The previous prime is 231312000307. The next prime is 231312000341. The reversal of 231312000321 is 123000213132.

231312000321 is a `hidden beast` number, since 2 + 31 + 312 + 0 + 0 + 0 + 321 = 666.

It is not a de Polignac number, because 231312000321 - 2⁵ = 231312000289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231312000294 and 231312000303.

It is not an unprimeable number, because it can be changed into a prime (231312000341) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 15456621 + ... + 15471578.

It is an arithmetic number, because the mean of its divisors is an integer number (21495099000).

Almost surely, 2^231312000321 is an apocalyptic number.

It is an amenable number.

231312000321 is a deficient number, since it is larger than the sum of its proper divisors (112609583679).

231312000321 is a wasteful number, since it uses less digits than its factorization.

231312000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30928485 (or 30928479 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 231312000321 its reverse (123000213132), we get a palindrome (354312213453).

The spelling of 231312000321 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred twenty-one", and thus it is an aban number.