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12774222031 = 41701944389
BaseRepresentation
bin10111110010110011…
…10010100011001111
31012222020221201022111
423321121302203033
5202130200101111
65511323524451
7631362044554
oct137131624317
935866851274
1012774222031
11546579609a
122586089727
13128769037c
14892796a2b
154eb704a21
hex2f96728cf

12774222031 has 8 divisors (see below), whose sum is σ = 13087947600. Its totient is φ = 12460599360.

The previous prime is 12774222023. The next prime is 12774222037. The reversal of 12774222031 is 13022247721.

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 12774222031 - 23 = 12774222023 is a prime.

It is a super-2 number, since 2×127742220312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12774221984 and 12774222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12774222037) 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, 265585 + ... + 309973.

It is an arithmetic number, because the mean of its divisors is an integer number (1635993450).

Almost surely, 212774222031 is an apocalyptic number.

12774222031 is a deficient number, since it is larger than the sum of its proper divisors (313725569).

12774222031 is an equidigital number, since it uses as much as digits as its factorization.

12774222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51449.

The product of its (nonzero) digits is 9408, while the sum is 31.

Adding to 12774222031 its reverse (13022247721), we get a palindrome (25796469752).

The spelling of 12774222031 in words is "twelve billion, seven hundred seventy-four million, two hundred twenty-two thousand, thirty-one".

Divisors: 1 41 7019 44389 287779 1819949 311566391 12774222031