Search a number
-
+
31222103332 = 2271115075119
BaseRepresentation
bin11101000100111110…
…110111110100100100
32222120220220011222111
4131010332313310210
51002420324301312
622202050010404
72153466333220
oct350476676444
988526804874
1031222103332
1112272077392
126074276a04
132c37628174
14172288d780
15c2b07d8a7
hex744fb7d24

31222103332 has 12 divisors (see below), whose sum is σ = 62444206720. Its totient is φ = 13380901416.

The previous prime is 31222103329. The next prime is 31222103333. The reversal of 31222103332 is 23330122213.

31222103332 is an admirable number.

It is a super-4 number, since 4×312221033324 (a number of 43 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (31222103333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557537532 + ... + 557537587.

Almost surely, 231222103332 is an apocalyptic number.

It is an amenable number.

31222103332 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31222103332 is a wasteful number, since it uses less digits than its factorization.

31222103332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115075130 (or 1115075128 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31222103332 its reverse (23330122213), we get a palindrome (54552225545).

The spelling of 31222103332 in words is "thirty-one billion, two hundred twenty-two million, one hundred three thousand, three hundred thirty-two".

Divisors: 1 2 4 7 14 28 1115075119 2230150238 4460300476 7805525833 15611051666 31222103332