Search a number
-
+
31210200013 = 1303220710853
BaseRepresentation
bin11101000100010001…
…011101101111001101
32222120002111102200211
4131010101131233031
51002404302400023
622200542522421
72153263215526
oct350421355715
988502442624
1031210200013
1112266387233
126070296411
132c3501b195
14172107184d
15c29ecba0d
hex74445dbcd

31210200013 has 8 divisors (see below), whose sum is σ = 31251184128. Its totient is φ = 31169244624.

The previous prime is 31210199963. The next prime is 31210200041. The reversal of 31210200013 is 31000201213.

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 31210200013 - 225 = 31176645581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31210199966 and 31210200002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31210200913) 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 7 ways as a sum of consecutive naturals, for example, 2870295 + ... + 2881147.

It is an arithmetic number, because the mean of its divisors is an integer number (3906398016).

Almost surely, 231210200013 is an apocalyptic number.

It is an amenable number.

31210200013 is a deficient number, since it is larger than the sum of its proper divisors (40984115).

31210200013 is a wasteful number, since it uses less digits than its factorization.

31210200013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14363.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31210200013 its reverse (31000201213), we get a palindrome (62210401226).

The spelling of 31210200013 in words is "thirty-one billion, two hundred ten million, two hundred thousand, thirteen".

Divisors: 1 1303 2207 10853 2875721 14141459 23952571 31210200013