30431320403 has 16 divisors (see below), whose sum is σ = 34103255040. Its totient is φ = 26910655200.

The previous prime is 30431320393. The next prime is 30431320411. The reversal of 30431320403 is 30402313403.

It is not a de Polignac number, because 30431320403 - 2⁸ = 30431320147 is a prime.

It is a super-2 number, since 2×30431320403² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30431320453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2636078 + ... + 2647596.

It is an arithmetic number, because the mean of its divisors is an integer number (2131453440).

Almost surely, 2^30431320403 is an apocalyptic number.

30431320403 is a deficient number, since it is larger than the sum of its proper divisors (3671934637).

30431320403 is a wasteful number, since it uses less digits than its factorization.

30431320403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18058.

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

Adding to 30431320403 its reverse (30402313403), we get a palindrome (60833633806).

The spelling of 30431320403 in words is "thirty billion, four hundred thirty-one million, three hundred twenty thousand, four hundred three".