1243405346233 has 2 divisors, whose sum is σ = 1243405346234. Its totient is φ = 1243405346232.

The previous prime is 1243405346213. The next prime is 1243405346297. The reversal of 1243405346233 is 3326435043421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 770483683984 + 472921662249 = 877772^2 + 687693^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243405346233 - 2¹⁷ = 1243405215161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1243405346213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621702673116 + 621702673117.

It is an arithmetic number, because the mean of its divisors is an integer number (621702673117).

Almost surely, 2^{1243405346233} is an apocalyptic number.

It is an amenable number.

1243405346233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243405346233 is an equidigital number, since it uses as much as digits as its factorization.

1243405346233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 40.

The spelling of 1243405346233 in words is "one trillion, two hundred forty-three billion, four hundred five million, three hundred forty-six thousand, two hundred thirty-three".