30021510231 has 12 divisors (see below), whose sum is σ = 43372485208. Its totient is φ = 20010610224.

The previous prime is 30021510161. The next prime is 30021510271. The reversal of 30021510231 is 13201512003.

It is not a de Polignac number, because 30021510231 - 2⁹ = 30021509719 is a prime.

It is a super-2 number, since 2×30021510231² (a number of 22 digits) contains 22 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 (30021510271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259405 + ... + 356838.

Almost surely, 2^30021510231 is an apocalyptic number.

30021510231 is a deficient number, since it is larger than the sum of its proper divisors (13350974977).

30021510231 is a wasteful number, since it uses less digits than its factorization.

30021510231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621662 (or 621659 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The spelling of 30021510231 in words is "thirty billion, twenty-one million, five hundred ten thousand, two hundred thirty-one".