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31233223068 = 22329372425693
BaseRepresentation
bin11101000101101001…
…010010100110011100
32222121200211010101120
4131011221102212130
51002431201114233
622203124210540
72153663005245
oct350551224634
988550733346
1031233223068
1112278381853
126077b39a50
132c39a1c5a8
141724145ccc
15c2c0284b3
hex745a5299c

31233223068 has 48 divisors (see below), whose sum is σ = 77428152480. Its totient is φ = 9780390144.

The previous prime is 31233223051. The next prime is 31233223069. The reversal of 31233223068 is 86032233213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233223069) 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 15 ways as a sum of consecutive naturals, for example, 1199971 + ... + 1225722.

It is an arithmetic number, because the mean of its divisors is an integer number (1613086510).

Almost surely, 231233223068 is an apocalyptic number.

It is an amenable number.

31233223068 is an abundant number, since it is smaller than the sum of its proper divisors (46194929412).

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

31233223068 is a wasteful number, since it uses less digits than its factorization.

31233223068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425766 (or 2425764 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The spelling of 31233223068 in words is "thirty-one billion, two hundred thirty-three million, two hundred twenty-three thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 29 37 58 74 87 111 116 148 174 222 348 444 1073 2146 3219 4292 6438 12876 2425693 4851386 7277079 9702772 14554158 29108316 70345097 89750641 140690194 179501282 211035291 269251923 281380388 359002564 422070582 538503846 844141164 1077007692 2602768589 5205537178 7808305767 10411074356 15616611534 31233223068