3431320403 has 12 divisors (see below), whose sum is σ = 3993737832. Its totient is φ = 2939509440.

The previous prime is 3431320391. The next prime is 3431320421. The reversal of 3431320403 is 3040231343.

3431320403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-3431320403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3431320433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75083 + ... + 111803.

It is an arithmetic number, because the mean of its divisors is an integer number (332811486).

Almost surely, 2^3431320403 is an apocalyptic number.

3431320403 is a deficient number, since it is larger than the sum of its proper divisors (562417429).

3431320403 is a wasteful number, since it uses less digits than its factorization.

3431320403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38642 (or 38635 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 3431320403 is about 58577.4735115812. The cubic root of 3431320403 is about 1508.2977767008.

Adding to 3431320403 its reverse (3040231343), we get a palindrome (6471551746).

The spelling of 3431320403 in words is "three billion, four hundred thirty-one million, three hundred twenty thousand, four hundred three".