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12423113243231 = 71304157538121
BaseRepresentation
bin1011010011000111101101…
…0000000111101001011111
31121222122020010021212212212
42310301323100013221133
53112020013442240411
642231033251151035
72421353220153215
oct264617320075137
947878203255785
1012423113243231
113a5a681612a09
1214878235a547b
136c16576b96c2
1430d3d370acb5
15168248a4768b
hexb4c7b407a5f

12423113243231 has 8 divisors (see below), whose sum is σ = 12602229632928. Its totient is φ = 12244111936000.

The previous prime is 12423113243197. The next prime is 12423113243257. The reversal of 12423113243231 is 13234231132421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12423113243231 - 230 = 12422039501407 is a prime.

It is a super-2 number, since 2×124231132432312 (a number of 27 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 (12423113243731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28553150 + ... + 28984971.

It is an arithmetic number, because the mean of its divisors is an integer number (1575278704116).

Almost surely, 212423113243231 is an apocalyptic number.

12423113243231 is a deficient number, since it is larger than the sum of its proper divisors (179116389697).

12423113243231 is an equidigital number, since it uses as much as digits as its factorization.

12423113243231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57541233.

The product of its digits is 20736, while the sum is 32.

Adding to 12423113243231 its reverse (13234231132421), we get a palindrome (25657344375652).

The spelling of 12423113243231 in words is "twelve trillion, four hundred twenty-three billion, one hundred thirteen million, two hundred forty-three thousand, two hundred thirty-one".

Divisors: 1 71 3041 215911 57538121 4085206591 174973425961 12423113243231