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12431203313 = 163510114951
BaseRepresentation
bin10111001001111010…
…10001101111110001
31012002100111120002112
423210331101233301
5200424342001223
65413311455105
7620025325154
oct134475215761
935070446075
1012431203313
1152aa0aa051
1224ab227495
1312315aca09
1485cdc5c9b
154cb549778
hex2e4f51bf1

12431203313 has 8 divisors (see below), whose sum is σ = 12510757056. Its totient is φ = 12351690000.

The previous prime is 12431203297. The next prime is 12431203327. The reversal of 12431203313 is 31330213421.

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 12431203313 - 24 = 12431203297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12431203363) 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, 823988 + ... + 838938.

It is an arithmetic number, because the mean of its divisors is an integer number (1563844632).

Almost surely, 212431203313 is an apocalyptic number.

It is an amenable number.

12431203313 is a deficient number, since it is larger than the sum of its proper divisors (79553743).

12431203313 is a wasteful number, since it uses less digits than its factorization.

12431203313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20215.

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

Adding to 12431203313 its reverse (31330213421), we get a palindrome (43761416734).

The spelling of 12431203313 in words is "twelve billion, four hundred thirty-one million, two hundred three thousand, three hundred thirteen".

Divisors: 1 163 5101 14951 831463 2437013 76265051 12431203313