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31234131140 = 2257145748131
BaseRepresentation
bin11101000101101100…
…110000010011000100
32222121202112021000212
4131011230300103010
51002431414144030
622203155454552
72154003506552
oct350554602304
988552467025
1031234131140
1112278942023
1260782b7458
132c39c79a04
141724300bd2
15c2c157595
hex745b304c4

31234131140 has 48 divisors (see below), whose sum is σ = 66662434944. Its totient is φ = 12290476800.

The previous prime is 31234131121. The next prime is 31234131151. The reversal of 31234131140 is 4113143213.

It is a super-3 number, since 3×312341311403 (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624875 + ... + 673005.

It is an arithmetic number, because the mean of its divisors is an integer number (1388800728).

Almost surely, 231234131140 is an apocalyptic number.

It is an amenable number.

31234131140 is an abundant number, since it is smaller than the sum of its proper divisors (35428303804).

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

31234131140 is a wasteful number, since it uses less digits than its factorization.

31234131140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48668 (or 48666 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31234131140 its reverse (4113143213), we get a palindrome (35347274353).

The spelling of 31234131140 in words is "thirty-one billion, two hundred thirty-four million, one hundred thirty-one thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 71 142 284 355 457 710 914 1420 1828 2285 4570 9140 32447 48131 64894 96262 129788 162235 192524 240655 324470 481310 648940 962620 3417301 6834602 13669204 17086505 21995867 34173010 43991734 68346020 87983468 109979335 219958670 439917340 1561706557 3123413114 6246826228 7808532785 15617065570 31234131140