Search a number
-
+
31300221201 = 355730116221
BaseRepresentation
bin11101001001101000…
…110111100100010001
32222210100212222112220
4131021220313210101
51003100324034301
622213520211253
72155435330134
oct351150674421
988710788486
1031300221201
1112302182507
126096469b29
132c4a879962
14172cdc621b
15c32d5e936
hex749a37911

31300221201 has 16 divisors (see below), whose sum is σ = 41829162048. Its totient is φ = 20819086400.

The previous prime is 31300221181. The next prime is 31300221223. The reversal of 31300221201 is 10212200313.

It is a cyclic number.

It is not a de Polignac number, because 31300221201 - 210 = 31300220177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31300221401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5028271 + ... + 5034491.

It is an arithmetic number, because the mean of its divisors is an integer number (2614322628).

Almost surely, 231300221201 is an apocalyptic number.

It is an amenable number.

31300221201 is a deficient number, since it is larger than the sum of its proper divisors (10528940847).

31300221201 is a wasteful number, since it uses less digits than its factorization.

31300221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9792.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31300221201 its reverse (10212200313), we get a palindrome (41512421514).

The spelling of 31300221201 in words is "thirty-one billion, three hundred million, two hundred twenty-one thousand, two hundred one".

Divisors: 1 3 557 1671 3011 6221 9033 18663 1677127 3465097 5031381 10395291 18731431 56194293 10433407067 31300221201