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243123340331 is a prime number
BaseRepresentation
bin1110001001101101000…
…1111100010000101011
3212020112200110100110102
43202123101330100223
512440404033342311
6303404520540015
723364552203204
oct3423321742053
9766480410412
10243123340331
1194120873043
123b15162160b
1319c074ac3c1
14baa54005ab
1564ce26543b
hex389b47c42b

243123340331 has 2 divisors, whose sum is σ = 243123340332. Its totient is φ = 243123340330.

The previous prime is 243123340289. The next prime is 243123340373. The reversal of 243123340331 is 133043321342.

243123340331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (243123340289) and next prime (243123340373).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-243123340331 is a prime.

It is a super-2 number, since 2×2431233403312 (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243123340294 and 243123340303.

It is not a weakly prime, because it can be changed into another prime (243123346331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121561670165 + 121561670166.

It is an arithmetic number, because the mean of its divisors is an integer number (121561670166).

Almost surely, 2243123340331 is an apocalyptic number.

243123340331 is a deficient number, since it is larger than the sum of its proper divisors (1).

243123340331 is an equidigital number, since it uses as much as digits as its factorization.

243123340331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 243123340331 its reverse (133043321342), we get a palindrome (376166661673).

The spelling of 243123340331 in words is "two hundred forty-three billion, one hundred twenty-three million, three hundred forty thousand, three hundred thirty-one".