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31080336025 = 52297926869
BaseRepresentation
bin11100111100100010…
…000100101010011001
32222020001010122210111
4130330202010222121
51002123031223100
622140023244321
72150125332364
oct347442045231
988201118714
1031080336025
11121aa048522
1260348a96a1
132c1414c59b
14170bb090db
15c1d8c86ba
hex73c884a99

31080336025 has 36 divisors (see below), whose sum is σ = 40385501100. Its totient is φ = 23699544960.

The previous prime is 31080336017. The next prime is 31080336031. The reversal of 31080336025 is 52063308013.

It can be written as a sum of positive squares in 6 ways, for example, as 6191171856 + 24889164169 = 78684^2 + 157763^2 .

It is not a de Polignac number, because 31080336025 - 23 = 31080336017 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4521291 + ... + 4528159.

It is an arithmetic number, because the mean of its divisors is an integer number (1121819475).

Almost surely, 231080336025 is an apocalyptic number.

It is an amenable number.

31080336025 is a deficient number, since it is larger than the sum of its proper divisors (9305165075).

31080336025 is an equidigital number, since it uses as much as digits as its factorization.

31080336025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066 (or 6982 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 31080336025 in words is "thirty-one billion, eighty million, three hundred thirty-six thousand, twenty-five".

Divisors: 1 5 25 29 79 145 395 725 1975 2291 6241 6869 11455 31205 34345 57275 156025 171725 180989 199201 542651 904945 996005 2713255 4524725 4980025 13566275 15736879 42869429 78684395 214347145 393421975 1071735725 1243213441 6216067205 31080336025