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30211324331 = 41221732911
BaseRepresentation
bin11100001000101111…
…000011100110101011
32212222110221021212012
4130020233003212223
5443333044334311
621513501310135
72116444006526
oct341057034653
985873837765
1030211324331
11118a3561141
125a3186534b
132b060b5996
141668537bbd
15bbc46d78b
hex708bc39ab

30211324331 has 4 divisors (see below), whose sum is σ = 30212098464. Its totient is φ = 30210550200.

The previous prime is 30211324289. The next prime is 30211324337. The reversal of 30211324331 is 13342311203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30211324331 - 26 = 30211324267 is a prime.

It is a super-2 number, since 2×302113243312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30211324297 and 30211324306.

It is not an unprimeable number, because it can be changed into a prime (30211324337) 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, 325235 + ... + 407676.

It is an arithmetic number, because the mean of its divisors is an integer number (7553024616).

Almost surely, 230211324331 is an apocalyptic number.

30211324331 is a deficient number, since it is larger than the sum of its proper divisors (774133).

30211324331 is an equidigital number, since it uses as much as digits as its factorization.

30211324331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774132.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 30211324331 its reverse (13342311203), we get a palindrome (43553635534).

The spelling of 30211324331 in words is "thirty billion, two hundred eleven million, three hundred twenty-four thousand, three hundred thirty-one".

Divisors: 1 41221 732911 30211324331