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12431177747 = 192337197649
BaseRepresentation
bin10111001001111010…
…01011100000010011
31012002100110021000122
423210331023200103
5200424340141442
65413311140455
7620025160502
oct134475134023
935070407018
1012431177747
1152aa09191a
1224ab21472b
1312315a11a1
1485cdba839
154cb541dd2
hex2e4f4b813

12431177747 has 16 divisors (see below), whose sum is σ = 13659840000. Its totient is φ = 11260364544.

The previous prime is 12431177743. The next prime is 12431177761. The reversal of 12431177747 is 74777113421.

12431177747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12431177747 - 22 = 12431177743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12431177698 and 12431177707.

It is not an unprimeable number, because it can be changed into a prime (12431177741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1621379 + ... + 1629027.

It is an arithmetic number, because the mean of its divisors is an integer number (853740000).

Almost surely, 212431177747 is an apocalyptic number.

12431177747 is a deficient number, since it is larger than the sum of its proper divisors (1228662253).

12431177747 is a wasteful number, since it uses less digits than its factorization.

12431177747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11410.

The product of its digits is 230496, while the sum is 44.

The spelling of 12431177747 in words is "twelve billion, four hundred thirty-one million, one hundred seventy-seven thousand, seven hundred forty-seven".

Divisors: 1 19 23 437 3719 7649 70661 85537 145331 175927 1625203 3342613 28446631 540485989 654272513 12431177747