343243121403 has 48 divisors (see below), whose sum is σ = 581673060096. Its totient is φ = 176157970560.

The previous prime is 343243121401. The next prime is 343243121407. The reversal of 343243121403 is 304121342343.

It is a happy number.

It is not a de Polignac number, because 343243121403 - 2¹ = 343243121401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (343243121401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1175653 + ... + 1438278.

It is an arithmetic number, because the mean of its divisors is an integer number (12118188752).

Almost surely, 2^343243121403 is an apocalyptic number.

343243121403 is a deficient number, since it is larger than the sum of its proper divisors (238429938693).

343243121403 is a wasteful number, since it uses less digits than its factorization.

343243121403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614004 (or 2613991 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 343243121403 its reverse (304121342343), we get a palindrome (647364463746).

The spelling of 343243121403 in words is "three hundred forty-three billion, two hundred forty-three million, one hundred twenty-one thousand, four hundred three".