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1311030222 = 23232413053
BaseRepresentation
bin100111000100100…
…1011101111001110
310101100221020100220
41032021023233032
510141110431342
6334031532210
744326400355
oct11611135716
93340836326
101311030222
11613051457
1230708a066
1317b7ca738
14c619299c
157a16d5ec
hex4e24bbce

1311030222 has 24 divisors (see below), whose sum is σ = 2741026344. Its totient is φ = 418008624.

The previous prime is 1311030211. The next prime is 1311030223. The reversal of 1311030222 is 2220301131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311030223) 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 11 ways as a sum of consecutive naturals, for example, 203353 + ... + 209700.

It is an arithmetic number, because the mean of its divisors is an integer number (114209431).

Almost surely, 21311030222 is an apocalyptic number.

1311030222 is an abundant number, since it is smaller than the sum of its proper divisors (1429996122).

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

1311030222 is a wasteful number, since it uses less digits than its factorization.

1311030222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413104 (or 413081 counting only the distinct ones).

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

The square root of 1311030222 is about 36208.1513198340. The cubic root of 1311030222 is about 1094.4709389318.

Adding to 1311030222 its reverse (2220301131), we get a palindrome (3531331353).

The spelling of 1311030222 in words is "one billion, three hundred eleven million, thirty thousand, two hundred twenty-two".

Divisors: 1 2 3 6 23 46 69 138 529 1058 1587 3174 413053 826106 1239159 2478318 9500219 19000438 28500657 57001314 218505037 437010074 655515111 1311030222