343531540423 has 4 divisors (see below), whose sum is σ = 355377455640. Its totient is φ = 331685625208.

The previous prime is 343531540411. The next prime is 343531540463. The reversal of 343531540423 is 324045135343.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-343531540423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343531540403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5922957565 + ... + 5922957622.

It is an arithmetic number, because the mean of its divisors is an integer number (88844363910).

Almost surely, 2^343531540423 is an apocalyptic number.

343531540423 is a deficient number, since it is larger than the sum of its proper divisors (11845915217).

343531540423 is a wasteful number, since it uses less digits than its factorization.

343531540423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11845915216.

The product of its (nonzero) digits is 259200, while the sum is 37.

Adding to 343531540423 its reverse (324045135343), we get a palindrome (667576675766).

The spelling of 343531540423 in words is "three hundred forty-three billion, five hundred thirty-one million, five hundred forty thousand, four hundred twenty-three".