30311012012321 has 4 divisors (see below), whose sum is σ = 30763415176752. Its totient is φ = 29858608847892.

The previous prime is 30311012012273. The next prime is 30311012012371. The reversal of 30311012012321 is 12321021011303.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30311012012321 - 2¹⁰ = 30311012011297 is a prime.

It is a super-2 number, since 2×30311012012321² (a number of 28 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 = 30311012012293 and 30311012012302.

It is not an unprimeable number, because it can be changed into a prime (30311012012371) 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, 226201582115 + ... + 226201582248.

It is an arithmetic number, because the mean of its divisors is an integer number (7690853794188).

Almost surely, 2^{30311012012321} is an apocalyptic number.

It is an amenable number.

30311012012321 is a deficient number, since it is larger than the sum of its proper divisors (452403164431).

30311012012321 is an equidigital number, since it uses as much as digits as its factorization.

30311012012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452403164430.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 30311012012321 its reverse (12321021011303), we get a palindrome (42632033023624).

The spelling of 30311012012321 in words is "thirty trillion, three hundred eleven billion, twelve million, twelve thousand, three hundred twenty-one".