30021311023 has 8 divisors (see below), whose sum is σ = 33239335680. Its totient is φ = 26884755480.

The previous prime is 30021310987. The next prime is 30021311077. The reversal of 30021311023 is 32011312003.

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

It is a de Polignac number, because none of the positive numbers 2^k-30021311023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30021310988 and 30021311006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021311923) 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, 20366503 + ... + 20367976.

It is an arithmetic number, because the mean of its divisors is an integer number (4154916960).

Almost surely, 2^30021311023 is an apocalyptic number.

30021311023 is a deficient number, since it is larger than the sum of its proper divisors (3218024657).

30021311023 is a wasteful number, since it uses less digits than its factorization.

30021311023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40734557.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30021311023 its reverse (32011312003), we get a palindrome (62032623026).

The spelling of 30021311023 in words is "thirty billion, twenty-one million, three hundred eleven thousand, twenty-three".