312211123447 has 2 divisors, whose sum is σ = 312211123448. Its totient is φ = 312211123446.

The previous prime is 312211123361. The next prime is 312211123493. The reversal of 312211123447 is 744321112213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312211123447 - 2¹⁵ = 312211090679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312211120447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156105561723 + 156105561724.

It is an arithmetic number, because the mean of its divisors is an integer number (156105561724).

Almost surely, 2^312211123447 is an apocalyptic number.

312211123447 is a deficient number, since it is larger than the sum of its proper divisors (1).

312211123447 is an equidigital number, since it uses as much as digits as its factorization.

312211123447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The spelling of 312211123447 in words is "three hundred twelve billion, two hundred eleven million, one hundred twenty-three thousand, four hundred forty-seven".