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31232110123 = 199823190699
BaseRepresentation
bin11101000101100101…
…000010111000101011
32222121121201120201101
4131011211002320223
51002430410010443
622203044302231
72153650361434
oct350545027053
988547646641
1031232110123
1112277791665
1260776a1977
132c3971cb46
141723d3648b
15c2bda884d
hex745942e2b

31232110123 has 8 divisors (see below), whose sum is σ = 31427360000. Its totient is φ = 31037243688.

The previous prime is 31232110121. The next prime is 31232110139. The reversal of 31232110123 is 32101123213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31232110123 - 21 = 31232110121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31232110123.

It is not an unprimeable number, because it can be changed into a prime (31232110121) 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 7 ways as a sum of consecutive naturals, for example, 68428 + ... + 259126.

It is an arithmetic number, because the mean of its divisors is an integer number (3928420000).

Almost surely, 231232110123 is an apocalyptic number.

31232110123 is a deficient number, since it is larger than the sum of its proper divisors (195249877).

31232110123 is a wasteful number, since it uses less digits than its factorization.

31232110123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191721.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31232110123 its reverse (32101123213), we get a palindrome (63333233336).

The spelling of 31232110123 in words is "thirty-one billion, two hundred thirty-two million, one hundred ten thousand, one hundred twenty-three".

Divisors: 1 199 823 163777 190699 37949101 156945277 31232110123