231321002303312 has 10 divisors (see below), whose sum is σ = 448184441962698. Its totient is φ = 115660501151648.

The previous prime is 231321002303311. The next prime is 231321002303341. The reversal of 231321002303312 is 213303200123132.

It can be written as a sum of positive squares in only one way, i.e., 152433494188816 + 78887508114496 = 12346396^2 + 8881864^2 .

It is a super-2 number, since 2×231321002303312² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231321002303311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7228781321963 + ... + 7228781321994.

Almost surely, 2^{231321002303312} is an apocalyptic number.

It is an amenable number.

231321002303312 is a deficient number, since it is larger than the sum of its proper divisors (216863439659386).

231321002303312 is a wasteful number, since it uses less digits than its factorization.

231321002303312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14457562643965 (or 14457562643959 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 231321002303312 its reverse (213303200123132), we get a palindrome (444624202426444).

The spelling of 231321002303312 in words is "two hundred thirty-one trillion, three hundred twenty-one billion, two million, three hundred three thousand, three hundred twelve".