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123754349231 is a prime number
BaseRepresentation
bin111001101000001010…
…1011000001010101111
3102211102122122022102222
41303100111120022233
54011422103133411
6132504005105555
711640514416662
oct1632025301257
9384378568388
10123754349231
1148536116287
121bb990b82bb
13b892c59ba6
145dbdbd36d9
1533448a54db
hex1cd05582af

123754349231 has 2 divisors, whose sum is σ = 123754349232. Its totient is φ = 123754349230.

The previous prime is 123754349189. The next prime is 123754349233. The reversal of 123754349231 is 132943457321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123754349231 - 26 = 123754349167 is a prime.

It is a super-2 number, since 2×1237543492312 (a number of 23 digits) contains 22 as substring.

Together with 123754349233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123754349233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61877174615 + 61877174616.

It is an arithmetic number, because the mean of its divisors is an integer number (61877174616).

Almost surely, 2123754349231 is an apocalyptic number.

123754349231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123754349231 is an equidigital number, since it uses as much as digits as its factorization.

123754349231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 44.

The spelling of 123754349231 in words is "one hundred twenty-three billion, seven hundred fifty-four million, three hundred forty-nine thousand, two hundred thirty-one".