30321323231 has 4 divisors (see below), whose sum is σ = 31299430464. Its totient is φ = 29343216000.

The previous prime is 30321323203. The next prime is 30321323257. The reversal of 30321323231 is 13232312303.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30321323231 is a prime.

It is a super-2 number, since 2×30321323231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30321323197 and 30321323206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30321323531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489053570 + ... + 489053631.

It is an arithmetic number, because the mean of its divisors is an integer number (7824857616).

Almost surely, 2^30321323231 is an apocalyptic number.

30321323231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30321323231 is a deficient number, since it is larger than the sum of its proper divisors (978107233).

30321323231 is an equidigital number, since it uses as much as digits as its factorization.

30321323231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978107232.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 30321323231 its reverse (13232312303), we get a palindrome (43553635534).

The spelling of 30321323231 in words is "thirty billion, three hundred twenty-one million, three hundred twenty-three thousand, two hundred thirty-one".