30302121331 has 4 divisors (see below), whose sum is σ = 30307217512. Its totient is φ = 30297025152.

The previous prime is 30302121319. The next prime is 30302121337. The reversal of 30302121331 is 13312120303.

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 30302121331 - 2⁷ = 30302121203 is a prime.

It is a super-2 number, since 2×30302121331² (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 = 30302121299 and 30302121308.

It is not an unprimeable number, because it can be changed into a prime (30302121337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2539161 + ... + 2551066.

It is an arithmetic number, because the mean of its divisors is an integer number (7576804378).

Almost surely, 2^30302121331 is an apocalyptic number.

30302121331 is a deficient number, since it is larger than the sum of its proper divisors (5096181).

30302121331 is an equidigital number, since it uses as much as digits as its factorization.

30302121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096180.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30302121331 its reverse (13312120303), we get a palindrome (43614241634).

The spelling of 30302121331 in words is "thirty billion, three hundred two million, one hundred twenty-one thousand, three hundred thirty-one".