30431321013 has 32 divisors (see below), whose sum is σ = 42391440000. Its totient is φ = 19394065152.

The previous prime is 30431320973. The next prime is 30431321021. The reversal of 30431321013 is 31012313403.

It is not a de Polignac number, because 30431321013 - 2⁸ = 30431320757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30431321113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4700943 + ... + 4707411.

It is an arithmetic number, because the mean of its divisors is an integer number (1324732500).

Almost surely, 2^30431321013 is an apocalyptic number.

It is an amenable number.

30431321013 is a deficient number, since it is larger than the sum of its proper divisors (11960118987).

30431321013 is a wasteful number, since it uses less digits than its factorization.

30431321013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7029.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30431321013 its reverse (31012313403), we get a palindrome (61443634416).

The spelling of 30431321013 in words is "thirty billion, four hundred thirty-one million, three hundred twenty-one thousand, thirteen".