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2931388130472 = 233257475257479
BaseRepresentation
bin101010101010000100010…
…110010010010010101000
3101101020102110221011121020
4222222010112102102220
5341011440330133342
610122354445012440
7421533346663044
oct52520426222250
911336373834536
102931388130472
11a302161a667a
123b4157b54120
13183575b69539
14a1c467c3024
15513bae310ec
hex2aa845924a8

2931388130472 has 32 divisors (see below), whose sum is σ = 7356985790400. Its totient is φ = 973327314944.

The previous prime is 2931388130459. The next prime is 2931388130479. The reversal of 2931388130472 is 2740318831392.

It is not an unprimeable number, because it can be changed into a prime (2931388130479) 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, 237622572 + ... + 237634907.

It is an arithmetic number, because the mean of its divisors is an integer number (229905805950).

Almost surely, 22931388130472 is an apocalyptic number.

It is an amenable number.

2931388130472 is an abundant number, since it is smaller than the sum of its proper divisors (4425597659928).

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

2931388130472 is a wasteful number, since it uses less digits than its factorization.

2931388130472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475257745 (or 475257741 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 2931388130472 in words is "two trillion, nine hundred thirty-one billion, three hundred eighty-eight million, one hundred thirty thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 24 257 514 771 1028 1542 2056 3084 6168 475257479 950514958 1425772437 1901029916 2851544874 3802059832 5703089748 11406179496 122141172103 244282344206 366423516309 488564688412 732847032618 977129376824 1465694065236 2931388130472