Search a number
-
+
31310132230211 = 1491571338440227
BaseRepresentation
bin1110001111001111101010…
…10011110011100001000011
311002212012220221121211120212
413013213311103303201003
513100441122322331321
6150331402015424335
76411040156532432
oct707476523634103
9132765827554525
1031310132230211
119a8160943281a
123618143b250ab
1314616c0740783
147a35c0479119
153946ad4cb55b
hex1c79f54f3843

31310132230211 has 8 divisors (see below), whose sum is σ = 31721033403600. Its totient is φ = 30901907937888.

The previous prime is 31310132230199. The next prime is 31310132230217. The reversal of 31310132230211 is 11203223101313.

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 31310132230211 - 26 = 31310132230147 is a prime.

It is a super-2 number, since 2×313101322302112 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31310132230217) 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, 669196721 + ... + 669243506.

It is an arithmetic number, because the mean of its divisors is an integer number (3965129175450).

Almost surely, 231310132230211 is an apocalyptic number.

31310132230211 is a deficient number, since it is larger than the sum of its proper divisors (410901173389).

31310132230211 is a wasteful number, since it uses less digits than its factorization.

31310132230211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338440533.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31310132230211 its reverse (11203223101313), we get a palindrome (42513355331524).

The spelling of 31310132230211 in words is "thirty-one trillion, three hundred ten billion, one hundred thirty-two million, two hundred thirty thousand, two hundred eleven".

Divisors: 1 149 157 23393 1338440227 199427593823 210135115639 31310132230211