30311233321213 has 4 divisors (see below), whose sum is σ = 32642866653628. Its totient is φ = 27979599988800.

The previous prime is 30311233321211. The next prime is 30311233321321. The reversal of 30311233321213 is 31212333211303.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15996376205209 + 14314857116004 = 3999547^2 + 3783498^2 .

It is a cyclic number.

It is not a de Polignac number, because 30311233321213 - 2¹ = 30311233321211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30311233321211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165816666188 + ... + 1165816666213.

It is an arithmetic number, because the mean of its divisors is an integer number (8160716663407).

Almost surely, 2^{30311233321213} is an apocalyptic number.

It is an amenable number.

30311233321213 is a deficient number, since it is larger than the sum of its proper divisors (2331633332415).

30311233321213 is a wasteful number, since it uses less digits than its factorization.

30311233321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331633332414.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 30311233321213 its reverse (31212333211303), we get a palindrome (61523566532516).

The spelling of 30311233321213 in words is "thirty trillion, three hundred eleven billion, two hundred thirty-three million, three hundred twenty-one thousand, two hundred thirteen".