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30221230231 is a prime number
BaseRepresentation
bin11100001001010100…
…110110000010010111
32220000011120120012101
4130021110312002113
5443343113331411
621514453502531
72116624134643
oct341124660227
986004516171
1030221230231
11118a9107635
125a35041a47
132b0817376a
141669995c23
15bbd2788c1
hex709536097

30221230231 has 2 divisors, whose sum is σ = 30221230232. Its totient is φ = 30221230230.

The previous prime is 30221230199. The next prime is 30221230241. The reversal of 30221230231 is 13203212203.

It is a strong prime.

It is an emirp because it is prime and its reverse (13203212203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30221230231 - 25 = 30221230199 is a prime.

It is a super-2 number, since 2×302212302312 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30221230199 and 30221230208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30221230241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110615115 + 15110615116.

It is an arithmetic number, because the mean of its divisors is an integer number (15110615116).

Almost surely, 230221230231 is an apocalyptic number.

30221230231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221230231 is an equidigital number, since it uses as much as digits as its factorization.

30221230231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30221230231 its reverse (13203212203), we get a palindrome (43424442434).

The spelling of 30221230231 in words is "thirty billion, two hundred twenty-one million, two hundred thirty thousand, two hundred thirty-one".