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12100011031 is a prime number
BaseRepresentation
bin10110100010011011…
…11000010000010111
31011020021022020200201
423101031320100113
5144240100323111
65320401121331
7605564253043
oct132115702027
934207266621
1012100011031
11514a160419
122418329247
1311aaab0354
1482b013023
154ac4286c1
hex2d1378417

12100011031 has 2 divisors, whose sum is σ = 12100011032. Its totient is φ = 12100011030.

The previous prime is 12100011029. The next prime is 12100011041. The reversal of 12100011031 is 13011000121.

It is an a-pointer prime, because the next prime (12100011041) can be obtained adding 12100011031 to its sum of digits (10).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12100011031 - 21 = 12100011029 is a prime.

It is a super-2 number, since 2×121000110312 (a number of 21 digits) contains 22 as substring.

Together with 12100011029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12100010999 and 12100011017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100011041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050005515 + 6050005516.

It is an arithmetic number, because the mean of its divisors is an integer number (6050005516).

Almost surely, 212100011031 is an apocalyptic number.

12100011031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100011031 is an equidigital number, since it uses as much as digits as its factorization.

12100011031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 12100011031 its reverse (13011000121), we get a palindrome (25111011152).

The spelling of 12100011031 in words is "twelve billion, one hundred million, eleven thousand, thirty-one".