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31310014424 = 23131915845149
BaseRepresentation
bin11101001010001110…
…001110011111011000
32222211001022112022212
4131022032032133120
51003110330430144
622214510134252
72155614505613
oct351216163730
988731275285
1031310014424
1112307761287
1260997b1388
132c4c8c8370
14173041517a
15c33b4649e
hex74a38e7d8

31310014424 has 32 divisors (see below), whose sum is σ = 66549630000. Its totient is φ = 13690207872.

The previous prime is 31310014409. The next prime is 31310014447. The reversal of 31310014424 is 42441001313.

It is a self number, because there is not a number n which added to its sum of digits gives 31310014424.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7920599 + ... + 7924550.

Almost surely, 231310014424 is an apocalyptic number.

It is an amenable number.

31310014424 is an abundant number, since it is smaller than the sum of its proper divisors (35239615576).

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

31310014424 is a wasteful number, since it uses less digits than its factorization.

31310014424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15845187 (or 15845183 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31310014424 its reverse (42441001313), we get a palindrome (73751015737).

The spelling of 31310014424 in words is "thirty-one billion, three hundred ten million, fourteen thousand, four hundred twenty-four".

Divisors: 1 2 4 8 13 19 26 38 52 76 104 152 247 494 988 1976 15845149 31690298 63380596 126761192 205986937 301057831 411973874 602115662 823947748 1204231324 1647895496 2408462648 3913751803 7827503606 15655007212 31310014424