30520321353 has 12 divisors (see below), whose sum is σ = 44123971060. Its totient is φ = 20328852096.

The previous prime is 30520321343. The next prime is 30520321367. The reversal of 30520321353 is 35312302503.

30520321353 is a `hidden beast` number, since 3 + 0 + 520 + 3 + 2 + 135 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17420832144 + 13099489209 = 131988^2 + 114453^2 .

It is not a de Polignac number, because 30520321353 - 2¹⁶ = 30520255817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30520321343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1491676 + ... + 1511997.

Almost surely, 2^30520321353 is an apocalyptic number.

It is an amenable number.

30520321353 is a deficient number, since it is larger than the sum of its proper divisors (13603649707).

30520321353 is a wasteful number, since it uses less digits than its factorization.

30520321353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004808 (or 3004805 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

Adding to 30520321353 its reverse (35312302503), we get a palindrome (65832623856).

The spelling of 30520321353 in words is "thirty billion, five hundred twenty million, three hundred twenty-one thousand, three hundred fifty-three".