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312242144101 = 2231400188987
BaseRepresentation
bin1001000101100110001…
…01010000001101100101
31002211221200200101100121
410202303011100031211
520103432442102401
6355235252441541
731362436301506
oct4426305201545
91084850611317
10312242144101
1111046a606368
12506213192b1
13235a11b5164
1411180d92bad
1581c7310ca1
hex48b3150365

312242144101 has 4 divisors (see below), whose sum is σ = 313642333312. Its totient is φ = 310841954892.

The previous prime is 312242144063. The next prime is 312242144113. The reversal of 312242144101 is 101441242213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101441242213 = 227446877719.

It is a cyclic number.

It is not a de Polignac number, because 312242144101 - 229 = 311705273189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312242144141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700094271 + ... + 700094716.

It is an arithmetic number, because the mean of its divisors is an integer number (78410583328).

Almost surely, 2312242144101 is an apocalyptic number.

It is an amenable number.

312242144101 is a deficient number, since it is larger than the sum of its proper divisors (1400189211).

312242144101 is a wasteful number, since it uses less digits than its factorization.

312242144101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400189210.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 312242144101 its reverse (101441242213), we get a palindrome (413683386314).

The spelling of 312242144101 in words is "three hundred twelve billion, two hundred forty-two million, one hundred forty-four thousand, one hundred one".

Divisors: 1 223 1400188987 312242144101