123343431349 has 2 divisors, whose sum is σ = 123343431350. Its totient is φ = 123343431348.

The previous prime is 123343431283. The next prime is 123343431391. The reversal of 123343431349 is 943134343321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73606403025 + 49737028324 = 271305^2 + 223018^2 .

It is a cyclic number.

It is not a de Polignac number, because 123343431349 - 2¹⁷ = 123343300277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123343434349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61671715674 + 61671715675.

It is an arithmetic number, because the mean of its divisors is an integer number (61671715675).

Almost surely, 2^123343431349 is an apocalyptic number.

It is an amenable number.

123343431349 is a deficient number, since it is larger than the sum of its proper divisors (1).

123343431349 is an equidigital number, since it uses as much as digits as its factorization.

123343431349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 40.

The spelling of 123343431349 in words is "one hundred twenty-three billion, three hundred forty-three million, four hundred thirty-one thousand, three hundred forty-nine".