123311212240343 has 2 divisors, whose sum is σ = 123311212240344. Its totient is φ = 123311212240342.

The previous prime is 123311212240339. The next prime is 123311212240393. The reversal of 123311212240343 is 343042212113321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123311212240343 - 2² = 123311212240339 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123311212240313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61655606120171 + 61655606120172.

It is an arithmetic number, because the mean of its divisors is an integer number (61655606120172).

Almost surely, 2^{123311212240343} is an apocalyptic number.

123311212240343 is a deficient number, since it is larger than the sum of its proper divisors (1).

123311212240343 is an equidigital number, since it uses as much as digits as its factorization.

123311212240343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 123311212240343 its reverse (343042212113321), we get a palindrome (466353424353664).

The spelling of 123311212240343 in words is "one hundred twenty-three trillion, three hundred eleven billion, two hundred twelve million, two hundred forty thousand, three hundred forty-three".