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312213105001 = 744601872143
BaseRepresentation
bin1001000101100010101…
…10011110100101101001
31002211212200001001012101
410202301112132211221
520103403023330001
6355232334213401
731361634414430
oct4426126364551
91084780031171
10312213105001
11110455181906
1250613654261
1323598188665
141117b194117
1581c49c6a01
hex48b159e969

312213105001 has 4 divisors (see below), whose sum is σ = 356814977152. Its totient is φ = 267611232852.

The previous prime is 312213104981. The next prime is 312213105013. The reversal of 312213105001 is 100501312213.

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: 100501312213 = 241417017893.

It is a cyclic number.

It is not a de Polignac number, because 312213105001 - 223 = 312204716393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312213105001.

It is not an unprimeable number, because it can be changed into a prime (312213105401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22300936065 + ... + 22300936078.

It is an arithmetic number, because the mean of its divisors is an integer number (89203744288).

Almost surely, 2312213105001 is an apocalyptic number.

It is an amenable number.

312213105001 is a deficient number, since it is larger than the sum of its proper divisors (44601872151).

312213105001 is an equidigital number, since it uses as much as digits as its factorization.

312213105001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44601872150.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 312213105001 its reverse (100501312213), we get a palindrome (412714417214).

The spelling of 312213105001 in words is "three hundred twelve billion, two hundred thirteen million, one hundred five thousand, one".

Divisors: 1 7 44601872143 312213105001