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12144355131 = 313130901667
BaseRepresentation
bin10110100111101110…
…00010011100111011
31011100100202011100210
423103313002130323
5144332423331011
65325023402203
7606643213116
oct132367023473
934310664323
1012144355131
115172198837
12242b153363
1311b703826c
14832c7757d
154b12876a6
hex2d3dc273b

12144355131 has 8 divisors (see below), whose sum is σ = 16316080704. Its totient is φ = 8034433160.

The previous prime is 12144355099. The next prime is 12144355141. The reversal of 12144355131 is 13155344121.

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 12144355131 - 25 = 12144355099 is a prime.

It is a super-2 number, since 2×121443551312 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12144355141) 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, 15450441 + ... + 15451226.

It is an arithmetic number, because the mean of its divisors is an integer number (2039510088).

Almost surely, 212144355131 is an apocalyptic number.

12144355131 is a deficient number, since it is larger than the sum of its proper divisors (4171725573).

12144355131 is a wasteful number, since it uses less digits than its factorization.

12144355131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30901801.

The product of its digits is 7200, while the sum is 30.

Adding to 12144355131 its reverse (13155344121), we get a palindrome (25299699252).

The spelling of 12144355131 in words is "twelve billion, one hundred forty-four million, three hundred fifty-five thousand, one hundred thirty-one".

Divisors: 1 3 131 393 30901667 92705001 4048118377 12144355131