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31054543412 = 22431092277297
BaseRepresentation
bin11100111010111111…
…101011101000110100
32222011020121020222112
4130322333223220310
51002044430342122
622133302350152
72146363156304
oct347277535064
988136536875
1031054543412
1112196531112
12602812b358
132c0b9bb699
141708513604
15c1b4d12e2
hex73afeba34

31054543412 has 48 divisors (see below), whose sum is σ = 56374422720. Its totient is φ = 14958784512.

The previous prime is 31054543391. The next prime is 31054543423. The reversal of 31054543412 is 21434545013.

It is a congruent number.

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, 4252148 + ... + 4259444.

It is an arithmetic number, because the mean of its divisors is an integer number (1174467140).

Almost surely, 231054543412 is an apocalyptic number.

It is an amenable number.

31054543412 is a deficient number, since it is larger than the sum of its proper divisors (25319879308).

31054543412 is a wasteful number, since it uses less digits than its factorization.

31054543412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7680 (or 7678 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 31054543412 in words is "thirty-one billion, fifty-four million, five hundred forty-three thousand, four hundred twelve".

Divisors: 1 2 4 43 86 109 172 218 227 436 454 908 4687 7297 9374 9761 14594 18748 19522 24743 29188 39044 49486 98972 313771 627542 795373 1063949 1255084 1590746 1656419 2127898 3181492 3312838 4255796 6625676 34201039 68402078 71226017 136804156 142452034 180549671 284904068 361099342 722198684 7763635853 15527271706 31054543412