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30322321213 = 61497087233
BaseRepresentation
bin11100001111010110…
…011110011100111101
32220021012210111221211
4130033112132130331
5444100003234323
621532504324421
72122262322562
oct341726363475
986235714854
1030322321213
11119501837a8
125a62a73711
132b230a9a02
14167918c869
15bc709670d
hex70f59e73d

30322321213 has 4 divisors (see below), whose sum is σ = 30819408508. Its totient is φ = 29825233920.

The previous prime is 30322321189. The next prime is 30322321241. The reversal of 30322321213 is 31212322303.

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 14717814489 + 15604506724 = 121317^2 + 124918^2 .

It is a cyclic number.

It is not a de Polignac number, because 30322321213 - 217 = 30322190141 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 (30322321013) 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, 248543556 + ... + 248543677.

It is an arithmetic number, because the mean of its divisors is an integer number (7704852127).

Almost surely, 230322321213 is an apocalyptic number.

It is an amenable number.

30322321213 is a deficient number, since it is larger than the sum of its proper divisors (497087295).

30322321213 is an equidigital number, since it uses as much as digits as its factorization.

30322321213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497087294.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 30322321213 its reverse (31212322303), we get a palindrome (61534643516).

The spelling of 30322321213 in words is "thirty billion, three hundred twenty-two million, three hundred twenty-one thousand, two hundred thirteen".

Divisors: 1 61 497087233 30322321213