30221333231 has 4 divisors (see below), whose sum is σ = 31263448200. Its totient is φ = 29179218264.

The previous prime is 30221333213. The next prime is 30221333293. The reversal of 30221333231 is 13233312203.

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-30221333231 is a prime.

It is a super-2 number, since 2×30221333231² (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 = 30221333197 and 30221333206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221333531) 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, 521057441 + ... + 521057498.

It is an arithmetic number, because the mean of its divisors is an integer number (7815862050).

Almost surely, 2^30221333231 is an apocalyptic number.

30221333231 is a deficient number, since it is larger than the sum of its proper divisors (1042114969).

30221333231 is a wasteful number, since it uses less digits than its factorization.

30221333231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042114968.

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

Adding to 30221333231 its reverse (13233312203), we get a palindrome (43454645434).

The spelling of 30221333231 in words is "thirty billion, two hundred twenty-one million, three hundred thirty-three thousand, two hundred thirty-one".