30302313021 has 24 divisors (see below), whose sum is σ = 44966417184. Its totient is φ = 19649679840.

The previous prime is 30302313007. The next prime is 30302313023. The reversal of 30302313021 is 12031320303.

30302313021 is a `hidden beast` number, since 30 + 302 + 31 + 302 + 1 = 666.

It is not a de Polignac number, because 30302313021 - 2²² = 30298118717 is a prime.

It is a super-2 number, since 2×30302313021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30302312985 and 30302313003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30302313023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1289386 + ... + 1312676.

It is an arithmetic number, because the mean of its divisors is an integer number (1873600716).

Almost surely, 2^30302313021 is an apocalyptic number.

It is an amenable number.

30302313021 is a deficient number, since it is larger than the sum of its proper divisors (14664104163).

30302313021 is a wasteful number, since it uses less digits than its factorization.

30302313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27241 (or 27238 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 30302313021 its reverse (12031320303), we get a palindrome (42333633324).

The spelling of 30302313021 in words is "thirty billion, three hundred two million, three hundred thirteen thousand, twenty-one".