312231303132191 has 2 divisors, whose sum is σ = 312231303132192. Its totient is φ = 312231303132190.

The previous prime is 312231303132137. The next prime is 312231303132347. The reversal of 312231303132191 is 191231303132213.

It is a weak prime.

It is an emirp because it is prime and its reverse (191231303132213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312231303132191 - 2⁴² = 307833256621087 is a prime.

It is a super-3 number, since 3×312231303132191³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312231303132491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156115651566095 + 156115651566096.

It is an arithmetic number, because the mean of its divisors is an integer number (156115651566096).

Almost surely, 2^{312231303132191} is an apocalyptic number.

312231303132191 is a deficient number, since it is larger than the sum of its proper divisors (1).

312231303132191 is an equidigital number, since it uses as much as digits as its factorization.

312231303132191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 35.

The spelling of 312231303132191 in words is "three hundred twelve trillion, two hundred thirty-one billion, three hundred three million, one hundred thirty-two thousand, one hundred ninety-one".