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30220112231 = 43369792407
BaseRepresentation
bin11100001001010000…
…100101000101100111
32220000002110202120222
4130021100211011213
5443342322042411
621514413514555
72116611500321
oct341120450547
986002422528
1030220112231
11118a8513671
125a347a2a5b
132b07b7191a
141669784611
15bbd1074db
hex709425167

30220112231 has 4 divisors (see below), whose sum is σ = 30289905072. Its totient is φ = 30150319392.

The previous prime is 30220112191. The next prime is 30220112239. The reversal of 30220112231 is 13221102203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13221102203 = 82911594633.

It is a cyclic number.

It is not a de Polignac number, because 30220112231 - 214 = 30220095847 is a prime.

It is a super-2 number, since 2×302201122312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30220112239) 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, 34895771 + ... + 34896636.

It is an arithmetic number, because the mean of its divisors is an integer number (7572476268).

Almost surely, 230220112231 is an apocalyptic number.

30220112231 is a deficient number, since it is larger than the sum of its proper divisors (69792841).

30220112231 is an equidigital number, since it uses as much as digits as its factorization.

30220112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69792840.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30220112231 its reverse (13221102203), we get a palindrome (43441214434).

It can be divided in two parts, 302201 and 12231, that added together give a cube (314432 = 683).

The spelling of 30220112231 in words is "thirty billion, two hundred twenty million, one hundred twelve thousand, two hundred thirty-one".

Divisors: 1 433 69792407 30220112231