423344342387 has 2 divisors, whose sum is σ = 423344342388. Its totient is φ = 423344342386.

The previous prime is 423344342299. The next prime is 423344342419. The reversal of 423344342387 is 783243443324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423344342387 - 2²² = 423340148083 is a prime.

It is not a weakly prime, because it can be changed into another prime (423344342087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211672171193 + 211672171194.

It is an arithmetic number, because the mean of its divisors is an integer number (211672171194).

Almost surely, 2^423344342387 is an apocalyptic number.

423344342387 is a deficient number, since it is larger than the sum of its proper divisors (1).

423344342387 is an equidigital number, since it uses as much as digits as its factorization.

423344342387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4644864, while the sum is 47.

The spelling of 423344342387 in words is "four hundred twenty-three billion, three hundred forty-four million, three hundred forty-two thousand, three hundred eighty-seven".