30311310133221 has 16 divisors (see below), whose sum is σ = 43764396224640. Its totient is φ = 18550058045760.

The previous prime is 30311310133219. The next prime is 30311310133327. The reversal of 30311310133221 is 12233101311303.

It is not a de Polignac number, because 30311310133221 - 2¹ = 30311310133219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30311310133191 and 30311310133200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30311310135221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2146990401 + ... + 2147004518.

It is an arithmetic number, because the mean of its divisors is an integer number (2735274764040).

Almost surely, 2^{30311310133221} is an apocalyptic number.

It is an amenable number.

30311310133221 is a deficient number, since it is larger than the sum of its proper divisors (13453086091419).

30311310133221 is a wasteful number, since it uses less digits than its factorization.

30311310133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293995116.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 30311310133221 its reverse (12233101311303), we get a palindrome (42544411444524).

The spelling of 30311310133221 in words is "thirty trillion, three hundred eleven billion, three hundred ten million, one hundred thirty-three thousand, two hundred twenty-one".