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12110031331 = 18616507271
BaseRepresentation
bin10110100011101000…
…00110100111100011
31011020222011022221221
423101310012213203
5144300132000311
65321355555511
7606045365536
oct132164064743
934228138857
1012110031331
115154884862
12241b75bb97
1311acbab218
1482c4a0a1d
154ad257671
hex2d1d069e3

12110031331 has 4 divisors (see below), whose sum is σ = 12116540464. Its totient is φ = 12103522200.

The previous prime is 12110031317. The next prime is 12110031337. The reversal of 12110031331 is 13313001121.

12110031331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12110031331 - 27 = 12110031203 is a prime.

It is a super-2 number, since 2×121100313312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12110031337) 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 3 ways as a sum of consecutive naturals, for example, 3251775 + ... + 3255496.

It is an arithmetic number, because the mean of its divisors is an integer number (3029135116).

Almost surely, 212110031331 is an apocalyptic number.

12110031331 is a deficient number, since it is larger than the sum of its proper divisors (6509133).

12110031331 is an equidigital number, since it uses as much as digits as its factorization.

12110031331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6509132.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 12110031331 its reverse (13313001121), we get a palindrome (25423032452).

The spelling of 12110031331 in words is "twelve billion, one hundred ten million, thirty-one thousand, three hundred thirty-one".

Divisors: 1 1861 6507271 12110031331