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10311030220 = 2255319974871
BaseRepresentation
bin10011001101001010…
…11101010111001100
3222121121000121101011
421212211131113030
5132104110431340
64423053055004
7513342211411
oct114645352714
928547017334
1010311030220
114411342687
121bb9187464
13c8427aa1a
146db5a8108
1540534a0ea
hex26695d5cc

10311030220 has 48 divisors (see below), whose sum is σ = 22077292608. Its totient is φ = 4043736320.

The previous prime is 10311030173. The next prime is 10311030227. The reversal of 10311030220 is 2203011301.

It is a self number, because there is not a number n which added to its sum of digits gives 10311030220.

It is not an unprimeable number, because it can be changed into a prime (10311030227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2114385 + ... + 2119255.

It is an arithmetic number, because the mean of its divisors is an integer number (459943596).

Almost surely, 210311030220 is an apocalyptic number.

10311030220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10311030220 is an abundant number, since it is smaller than the sum of its proper divisors (11766262388).

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

10311030220 is a wasteful number, since it uses less digits than its factorization.

10311030220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6930 (or 6928 counting only the distinct ones).

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

Adding to 10311030220 its reverse (2203011301), we get a palindrome (12514041521).

The spelling of 10311030220 in words is "ten billion, three hundred eleven million, thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 53 106 212 265 530 1060 1997 3994 4871 7988 9742 9985 19484 19970 24355 39940 48710 97420 105841 211682 258163 423364 516326 529205 1032652 1058410 1290815 2116820 2581630 5163260 9727387 19454774 38909548 48636935 97273870 194547740 515551511 1031103022 2062206044 2577757555 5155515110 10311030220