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12231231010 = 251577790593
BaseRepresentation
bin10110110010000100…
…11100011000100010
31011120102012220122221
423121002130120202
5200022143343020
65341405421254
7612046514425
oct133102343042
934512186587
1012231231010
115207235989
12245426a82a
1311cc0351cb
1484060d9bc
154b8be86aa
hex2d909c622

12231231010 has 16 divisors (see below), whose sum is σ = 22156449336. Its totient is φ = 4861329408.

The previous prime is 12231230969. The next prime is 12231231013. The reversal of 12231231010 is 1013213221.

It can be written as a sum of positive squares in 4 ways, for example, as 5247118969 + 6984112041 = 72437^2 + 83571^2 .

It is not an unprimeable number, because it can be changed into a prime (12231231013) 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, 3893727 + ... + 3896866.

Almost surely, 212231231010 is an apocalyptic number.

12231231010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12231231010 is a deficient number, since it is larger than the sum of its proper divisors (9925218326).

12231231010 is a wasteful number, since it uses less digits than its factorization.

12231231010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7790757.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12231231010 its reverse (1013213221), we get a palindrome (13244444231).

The spelling of 12231231010 in words is "twelve billion, two hundred thirty-one million, two hundred thirty-one thousand, ten".

Divisors: 1 2 5 10 157 314 785 1570 7790593 15581186 38952965 77905930 1223123101 2446246202 6115615505 12231231010