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31243444124 = 2219451990971
BaseRepresentation
bin11101000110010000…
…010001111110011100
32222122102001102001012
4131012100101332130
51002441310202444
622204131234352
72154145615244
oct350620217634
988572042035
1031243444124
1112283123002
12607b4489b8
132c3bb8a959
141725646b24
15c2cd96b9e
hex746411f9c

31243444124 has 24 divisors (see below), whose sum is σ = 57567081600. Its totient is φ = 14796088560.

The previous prime is 31243444051. The next prime is 31243444171. The reversal of 31243444124 is 42144434213.

It is a congruent number.

It is an unprimeable number.

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, 297959 + ... + 388929.

It is an arithmetic number, because the mean of its divisors is an integer number (2398628400).

Almost surely, 231243444124 is an apocalyptic number.

It is an amenable number.

31243444124 is a deficient number, since it is larger than the sum of its proper divisors (26323637476).

31243444124 is a wasteful number, since it uses less digits than its factorization.

31243444124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95513 (or 95511 counting only the distinct ones).

The product of its digits is 36864, while the sum is 32.

Adding to 31243444124 its reverse (42144434213), we get a palindrome (73387878337).

The spelling of 31243444124 in words is "thirty-one billion, two hundred forty-three million, four hundred forty-four thousand, one hundred twenty-four".

Divisors: 1 2 4 19 38 76 4519 9038 18076 85861 90971 171722 181942 343444 363884 1728449 3456898 6913796 411097949 822195898 1644391796 7810861031 15621722062 31243444124