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313101213 = 3231145161
BaseRepresentation
bin10010101010011…
…000101110011101
3210211011012010020
4102222120232131
51120123214323
651022502353
710521213345
oct2252305635
9724135106
10313101213
11150812637
1288a349b9
134cb370b9
142d823d25
151c74aae3
hex12a98b9d

313101213 has 8 divisors (see below), whose sum is σ = 417658176. Its totient is φ = 208639200.

The previous prime is 313101181. The next prime is 313101293. The reversal of 313101213 is 312101313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 313101213 - 25 = 313101181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313101192 and 313101201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313101293) 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, 15648 + ... + 29513.

It is an arithmetic number, because the mean of its divisors is an integer number (52207272).

Almost surely, 2313101213 is an apocalyptic number.

It is an amenable number.

313101213 is a deficient number, since it is larger than the sum of its proper divisors (104556963).

313101213 is a wasteful number, since it uses less digits than its factorization.

313101213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47475.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 313101213 is about 17694.6662302514. Note that the first 3 decimals coincide. The cubic root of 313101213 is about 679.0393102075.

Adding to 313101213 its reverse (312101313), we get a palindrome (625202526).

It can be divided in two parts, 31310 and 1213, that added together give a palindrome (32523).

The spelling of 313101213 in words is "three hundred thirteen million, one hundred one thousand, two hundred thirteen".

Divisors: 1 3 2311 6933 45161 135483 104367071 313101213