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31222120034 = 273760274363
BaseRepresentation
bin11101000100111110…
…111011111001100010
32222120220221000220002
4131010332323321202
51002420330320114
622202050220002
72153466433010
oct350476737142
988526830802
1031222120034
1112272088996
126074284602
132c37632951
1417228958b0
15c2b0837de
hex744fbbe62

31222120034 has 16 divisors (see below), whose sum is σ = 54970219968. Its totient is φ = 13019262192.

The previous prime is 31222120031. The next prime is 31222120067. The reversal of 31222120034 is 43002122213.

It is a super-2 number, since 2×312221200342 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31222119988 and 31222120015.

It is not an unprimeable number, because it can be changed into a prime (31222120031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30136664 + ... + 30137699.

It is an arithmetic number, because the mean of its divisors is an integer number (3435638748).

Almost surely, 231222120034 is an apocalyptic number.

31222120034 is a deficient number, since it is larger than the sum of its proper divisors (23748099934).

31222120034 is a wasteful number, since it uses less digits than its factorization.

31222120034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60274409.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31222120034 its reverse (43002122213), we get a palindrome (74224242247).

The spelling of 31222120034 in words is "thirty-one billion, two hundred twenty-two million, one hundred twenty thousand, thirty-four".

Divisors: 1 2 7 14 37 74 259 518 60274363 120548726 421920541 843841082 2230151431 4460302862 15611060017 31222120034