30231311221 has 8 divisors (see below), whose sum is σ = 30538003104. Its totient is φ = 29926098000.

The previous prime is 30231311171. The next prime is 30231311273. The reversal of 30231311221 is 12211313203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30231311221 - 2¹³ = 30231303029 is a prime.

It is a super-3 number, since 3×30231311221³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231311281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328546 + ... + 410371.

It is an arithmetic number, because the mean of its divisors is an integer number (3817250388).

Almost surely, 2^30231311221 is an apocalyptic number.

It is an amenable number.

30231311221 is a deficient number, since it is larger than the sum of its proper divisors (306691883).

30231311221 is a wasteful number, since it uses less digits than its factorization.

30231311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739331.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 30231311221 its reverse (12211313203), we get a palindrome (42442624424).

The spelling of 30231311221 in words is "thirty billion, two hundred thirty-one million, three hundred eleven thousand, two hundred twenty-one".