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31141430112 = 2531324953069
BaseRepresentation
bin11101000000001011…
…001000001101100000
32222101022002120010110
4131000023020031200
51002234201230422
622150044531320
72151466534302
oct350013101540
988338076113
1031141430112
1112230586401
126051250b40
132c239c0530
141715c8d972
15c23e4560c
hex7402c8360

31141430112 has 48 divisors (see below), whose sum is σ = 88034430960. Its totient is φ = 9581978112.

The previous prime is 31141430077. The next prime is 31141430113. The reversal of 31141430112 is 21103414113.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31141430113) 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, 12475287 + ... + 12477782.

It is an arithmetic number, because the mean of its divisors is an integer number (1834050645).

Almost surely, 231141430112 is an apocalyptic number.

31141430112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31141430112 is an abundant number, since it is smaller than the sum of its proper divisors (56893000848).

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

31141430112 is a wasteful number, since it uses less digits than its factorization.

31141430112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24953095 (or 24953087 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31141430112 its reverse (21103414113), we get a palindrome (52244844225).

The spelling of 31141430112 in words is "thirty-one billion, one hundred forty-one million, four hundred thirty thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 96 104 156 208 312 416 624 1248 24953069 49906138 74859207 99812276 149718414 199624552 299436828 324389897 399249104 598873656 648779794 798498208 973169691 1197747312 1297559588 1946339382 2395494624 2595119176 3892678764 5190238352 7785357528 10380476704 15570715056 31141430112