1340342343423 has 24 divisors (see below), whose sum is σ = 1957651238400. Its totient is φ = 883624002624.

The previous prime is 1340342343421. The next prime is 1340342343463. The reversal of 1340342343423 is 3243432430431.

1340342343423 is a `hidden beast` number, since 1 + 340 + 34 + 234 + 34 + 23 = 666.

It is not a de Polignac number, because 1340342343423 - 2¹ = 1340342343421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340342343421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 842815 + ... + 1841472.

It is an arithmetic number, because the mean of its divisors is an integer number (81568801600).

Almost surely, 2^{1340342343423} is an apocalyptic number.

1340342343423 is a deficient number, since it is larger than the sum of its proper divisors (617308894977).

1340342343423 is a wasteful number, since it uses less digits than its factorization.

1340342343423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684911 (or 2684908 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 36.

Adding to 1340342343423 its reverse (3243432430431), we get a palindrome (4583774773854).

The spelling of 1340342343423 in words is "one trillion, three hundred forty billion, three hundred forty-two million, three hundred forty-three thousand, four hundred twenty-three".