30031113021 has 16 divisors (see below), whose sum is σ = 49281826944. Its totient is φ = 15840586944.

The previous prime is 30031113019. The next prime is 30031113023. The reversal of 30031113021 is 12031113003.

It is an interprime number because it is at equal distance from previous prime (30031113019) and next prime (30031113023).

It is not a de Polignac number, because 30031113021 - 2¹ = 30031113019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031113023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55001766 + ... + 55002311.

It is an arithmetic number, because the mean of its divisors is an integer number (3080114184).

Almost surely, 2^30031113021 is an apocalyptic number.

It is an amenable number.

30031113021 is a deficient number, since it is larger than the sum of its proper divisors (19250713923).

30031113021 is a wasteful number, since it uses less digits than its factorization.

30031113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110004100.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 30031113021 its reverse (12031113003), we get a palindrome (42062226024).

The spelling of 30031113021 in words is "thirty billion, thirty-one million, one hundred thirteen thousand, twenty-one".