312021321103127 has 2 divisors, whose sum is σ = 312021321103128. Its totient is φ = 312021321103126.

The previous prime is 312021321103117. The next prime is 312021321103139. The reversal of 312021321103127 is 721301123120213.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312021321103127 - 2⁴ = 312021321103111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312021321103127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312021321103117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156010660551563 + 156010660551564.

It is an arithmetic number, because the mean of its divisors is an integer number (156010660551564).

Almost surely, 2^{312021321103127} is an apocalyptic number.

312021321103127 is a deficient number, since it is larger than the sum of its proper divisors (1).

312021321103127 is an equidigital number, since it uses as much as digits as its factorization.

312021321103127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 312021321103127 in words is "three hundred twelve trillion, twenty-one billion, three hundred twenty-one million, one hundred three thousand, one hundred twenty-seven".