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22013231313 = 397569132947
BaseRepresentation
bin10100100000000101…
…110100000011010001
32002211010210000102110
4110200011310003101
5330040341400223
614040203535533
71406336243643
oct244005640321
962733700373
1022013231313
119376993557
12432422a5a9
1320ca805578
1410cb826893
1588c893d93
hex5201740d1

22013231313 has 16 divisors (see below), whose sum is σ = 29705901120. Its totient is φ = 14498558976.

The previous prime is 22013231293. The next prime is 22013231323. The reversal of 22013231313 is 31313231022.

It is not a de Polignac number, because 22013231313 - 29 = 22013230801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22013231313.

It is not an unprimeable number, because it can be changed into a prime (22013231323) 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, 99106 + ... + 232052.

It is an arithmetic number, because the mean of its divisors is an integer number (1856618820).

Almost surely, 222013231313 is an apocalyptic number.

It is an amenable number.

22013231313 is a deficient number, since it is larger than the sum of its proper divisors (7692669807).

22013231313 is a wasteful number, since it uses less digits than its factorization.

22013231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133616.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 22013231313 its reverse (31313231022), we get a palindrome (53326462335).

The spelling of 22013231313 in words is "twenty-two billion, thirteen million, two hundred thirty-one thousand, three hundred thirteen".

Divisors: 1 3 97 291 569 1707 55193 132947 165579 398841 12895859 38687577 75646843 226940529 7337743771 22013231313