312331101032231 has 4 divisors (see below), whose sum is σ = 312331286306952. Its totient is φ = 312330915757512.

The previous prime is 312331101032227. The next prime is 312331101032273. The reversal of 312331101032231 is 132230101133213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312331101032231 - 2² = 312331101032227 is a prime.

It is a super-2 number, since 2×312331101032231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312331101032231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312331101032831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90085265 + ... + 93488058.

It is an arithmetic number, because the mean of its divisors is an integer number (78082821576738).

Almost surely, 2^{312331101032231} is an apocalyptic number.

312331101032231 is a deficient number, since it is larger than the sum of its proper divisors (185274721).

312331101032231 is a wasteful number, since it uses less digits than its factorization.

312331101032231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185274720.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 312331101032231 its reverse (132230101133213), we get a palindrome (444561202165444).

The spelling of 312331101032231 in words is "three hundred twelve trillion, three hundred thirty-one billion, one hundred one million, thirty-two thousand, two hundred thirty-one".