30221011031 has 4 divisors (see below), whose sum is σ = 30520229064. Its totient is φ = 29921793000.

The previous prime is 30221011021. The next prime is 30221011033. The reversal of 30221011031 is 13011012203.

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

It is a cyclic number.

It is not a de Polignac number, because 30221011031 - 2²² = 30216816727 is a prime.

It is a super-2 number, since 2×30221011031² (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 = 30221010997 and 30221011015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221011033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149608865 + ... + 149609066.

It is an arithmetic number, because the mean of its divisors is an integer number (7630057266).

Almost surely, 2^30221011031 is an apocalyptic number.

30221011031 is a deficient number, since it is larger than the sum of its proper divisors (299218033).

30221011031 is a wasteful number, since it uses less digits than its factorization.

30221011031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299218032.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 30221011031 its reverse (13011012203), we get a palindrome (43232023234).

The spelling of 30221011031 in words is "thirty billion, two hundred twenty-one million, eleven thousand, thirty-one".