30533353213 has 4 divisors (see below), whose sum is σ = 33309112608. Its totient is φ = 27757593820.

The previous prime is 30533353177. The next prime is 30533353219. The reversal of 30533353213 is 31235333503.

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 not a de Polignac number, because 30533353213 - 2²⁹ = 29996482301 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 (30533353219) 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, 1387879681 + ... + 1387879702.

It is an arithmetic number, because the mean of its divisors is an integer number (8327278152).

Almost surely, 2^30533353213 is an apocalyptic number.

It is an amenable number.

30533353213 is a deficient number, since it is larger than the sum of its proper divisors (2775759395).

30533353213 is a wasteful number, since it uses less digits than its factorization.

30533353213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775759394.

The product of its (nonzero) digits is 36450, while the sum is 31.

Adding to 30533353213 its reverse (31235333503), we get a palindrome (61768686716).

The spelling of 30533353213 in words is "thirty billion, five hundred thirty-three million, three hundred fifty-three thousand, two hundred thirteen".