30321311031 has 12 divisors (see below), whose sum is σ = 47779035720. Its totient is φ = 18376552080.

The previous prime is 30321310973. The next prime is 30321311057. The reversal of 30321311031 is 13011312303.

It is a happy number.

30321311031 is a `hidden beast` number, since 3 + 0 + 321 + 311 + 0 + 31 = 666.

It is not a de Polignac number, because 30321311031 - 2¹³ = 30321302839 is a prime.

It is a super-2 number, since 2×30321311031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30321310995 and 30321311013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30321311081) 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, 153137836 + ... + 153138033.

It is an arithmetic number, because the mean of its divisors is an integer number (3981586310).

Almost surely, 2^30321311031 is an apocalyptic number.

30321311031 is a deficient number, since it is larger than the sum of its proper divisors (17457724689).

30321311031 is a wasteful number, since it uses less digits than its factorization.

30321311031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306275886 (or 306275883 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 30321311031 its reverse (13011312303), we get a palindrome (43332623334).

The spelling of 30321311031 in words is "thirty billion, three hundred twenty-one million, three hundred eleven thousand, thirty-one".