30121331323 has 16 divisors (see below), whose sum is σ = 33448852800. Its totient is φ = 26979183616.

The previous prime is 30121331309. The next prime is 30121331327. The reversal of 30121331323 is 32313312103.

It is a cyclic number.

It is not a de Polignac number, because 30121331323 - 2²⁵ = 30087776891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30121331294 and 30121331303.

It is not an unprimeable number, because it can be changed into a prime (30121331327) 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 15 ways as a sum of consecutive naturals, for example, 118498 + ... + 272551.

It is an arithmetic number, because the mean of its divisors is an integer number (2090553300).

Almost surely, 2^30121331323 is an apocalyptic number.

30121331323 is a deficient number, since it is larger than the sum of its proper divisors (3327521477).

30121331323 is a wasteful number, since it uses less digits than its factorization.

30121331323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391286.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 30121331323 its reverse (32313312103), we get a palindrome (62434643426).

The spelling of 30121331323 in words is "thirty billion, one hundred twenty-one million, three hundred thirty-one thousand, three hundred twenty-three".