312231222132187 has 2 divisors, whose sum is σ = 312231222132188. Its totient is φ = 312231222132186.

The previous prime is 312231222132169. The next prime is 312231222132223. The reversal of 312231222132187 is 781231222132213.

It is a weak prime.

It is an emirp because it is prime and its reverse (781231222132213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312231222132187 - 2⁴³ = 303435129109979 is a prime.

It is a super-2 number, since 2×312231222132187² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312231222132587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156115611066093 + 156115611066094.

It is an arithmetic number, because the mean of its divisors is an integer number (156115611066094).

Almost surely, 2^{312231222132187} is an apocalyptic number.

312231222132187 is a deficient number, since it is larger than the sum of its proper divisors (1).

312231222132187 is an equidigital number, since it uses as much as digits as its factorization.

312231222132187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The spelling of 312231222132187 in words is "three hundred twelve trillion, two hundred thirty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, one hundred eighty-seven".