312001142101391 has 2 divisors, whose sum is σ = 312001142101392. Its totient is φ = 312001142101390.

The previous prime is 312001142101379. The next prime is 312001142101409. The reversal of 312001142101391 is 193101241100213.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312001142101391 - 2¹⁰ = 312001142100367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312001142101091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156000571050695 + 156000571050696.

It is an arithmetic number, because the mean of its divisors is an integer number (156000571050696).

Almost surely, 2^{312001142101391} is an apocalyptic number.

312001142101391 is a deficient number, since it is larger than the sum of its proper divisors (1).

312001142101391 is an equidigital number, since it uses as much as digits as its factorization.

312001142101391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 312001142101391 in words is "three hundred twelve trillion, one billion, one hundred forty-two million, one hundred one thousand, three hundred ninety-one".