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30312222223 = 1910871467691
BaseRepresentation
bin11100001110101111…
…111100111000001111
32220020111210102202011
4130032233330320033
5444034412102343
621531504042051
72122110431503
oct341657747017
986214712664
1030312222223
1111945506228
125a5b603327
132b20c8208a
141677ac0303
15bc624e29d
hex70ebfce0f

30312222223 has 8 divisors (see below), whose sum is σ = 31936977920. Its totient is φ = 28690404120.

The previous prime is 30312222211. The next prime is 30312222293. The reversal of 30312222223 is 32222221303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30312222223 - 221 = 30310125071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30312222194 and 30312222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30312222293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713193 + ... + 754498.

It is an arithmetic number, because the mean of its divisors is an integer number (3992122240).

Almost surely, 230312222223 is an apocalyptic number.

30312222223 is a deficient number, since it is larger than the sum of its proper divisors (1624755697).

30312222223 is a wasteful number, since it uses less digits than its factorization.

30312222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468797.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 30312222223 its reverse (32222221303), we get a palindrome (62534443526).

The spelling of 30312222223 in words is "thirty billion, three hundred twelve million, two hundred twenty-two thousand, two hundred twenty-three".

Divisors: 1 19 1087 20653 1467691 27886129 1595380117 30312222223