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22213031031 = 344361910303
BaseRepresentation
bin10100101011111111…
…111111010001110111
32010100001201220010000
4110223333333101313
5330443013443111
614112102202343
71414313435262
oct245377772167
963301656100
1022213031031
119469749a94
12437b1233b3
13213001c659
14110a195cd9
158a01adc56
hex52bfff477

22213031031 has 40 divisors (see below), whose sum is σ = 34012267520. Its totient is φ = 14439530448.

The previous prime is 22213031021. The next prime is 22213031033. The reversal of 22213031031 is 13013031222.

22213031031 is a `hidden beast` number, since 222 + 130 + 310 + 3 + 1 = 666.

It is not a de Polignac number, because 22213031031 - 211 = 22213028983 is a prime.

It is a super-2 number, since 2×222130310312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22213030995 and 22213031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22213031033) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2150826 + ... + 2161128.

It is an arithmetic number, because the mean of its divisors is an integer number (850306688).

Almost surely, 222213031031 is an apocalyptic number.

22213031031 is a deficient number, since it is larger than the sum of its proper divisors (11799236489).

22213031031 is a wasteful number, since it uses less digits than its factorization.

22213031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10977 (or 10968 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 22213031031 its reverse (13013031222), we get a palindrome (35226062253).

The spelling of 22213031031 in words is "twenty-two billion, two hundred thirteen million, thirty-one thousand, thirty-one".

Divisors: 1 3 9 27 43 81 129 387 619 1161 1857 3483 5571 10303 16713 26617 30909 50139 79851 92727 239553 278181 443029 718659 834543 1329087 2155977 3987261 6377557 11961783 19132671 35885349 57398013 172194039 274234951 516582117 822704853 2468114559 7404343677 22213031031