30320321031 has 80 divisors (see below), whose sum is σ = 60813570048. Its totient is φ = 14539176000.

The previous prime is 30320321027. The next prime is 30320321033. The reversal of 30320321031 is 13012302303.

It is not a de Polignac number, because 30320321031 - 2² = 30320321027 is a prime.

It is a super-2 number, since 2×30320321031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30320320995 and 30320321013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30320321033) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 105895 + ... + 268056.

Almost surely, 2^30320321031 is an apocalyptic number.

30320321031 is an abundant number, since it is smaller than the sum of its proper divisors (30493249017).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30320321031 is a wasteful number, since it uses less digits than its factorization.

30320321031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373994 (or 373985 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 30320321031 its reverse (13012302303), we get a palindrome (43332623334).

The spelling of 30320321031 in words is "thirty billion, three hundred twenty million, three hundred twenty-one thousand, thirty-one".