423240131243 has 2 divisors, whose sum is σ = 423240131244. Its totient is φ = 423240131242.

The previous prime is 423240131233. The next prime is 423240131257. The reversal of 423240131243 is 342131042324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423240131243 - 2⁶ = 423240131179 is a prime.

It is not a weakly prime, because it can be changed into another prime (423240131203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211620065621 + 211620065622.

It is an arithmetic number, because the mean of its divisors is an integer number (211620065622).

Almost surely, 2^423240131243 is an apocalyptic number.

423240131243 is a deficient number, since it is larger than the sum of its proper divisors (1).

423240131243 is an equidigital number, since it uses as much as digits as its factorization.

423240131243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 423240131243 its reverse (342131042324), we get a palindrome (765371173567).

The spelling of 423240131243 in words is "four hundred twenty-three billion, two hundred forty million, one hundred thirty-one thousand, two hundred forty-three".