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31092085317 = 3192919198479
BaseRepresentation
bin11100111101001110…
…111001001001000101
32222020212020120210110
4130331032321021011
51002134033212232
622141123143233
72150330236026
oct347516711105
988225216713
1031092085317
1112205742987
126038814b19
132c16704427
14170d4c6c4d
15c1e949acc
hex73d3b9245

31092085317 has 32 divisors (see below), whose sum is σ = 45379584000. Its totient is φ = 18860506560.

The previous prime is 31092085309. The next prime is 31092085333. The reversal of 31092085317 is 71358029013.

It is not a de Polignac number, because 31092085317 - 23 = 31092085309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31092085117) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 266484 + ... + 364962.

It is an arithmetic number, because the mean of its divisors is an integer number (1418112000).

Almost surely, 231092085317 is an apocalyptic number.

It is an amenable number.

31092085317 is a deficient number, since it is larger than the sum of its proper divisors (14287498683).

31092085317 is a wasteful number, since it uses less digits than its factorization.

31092085317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98721.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 31092085317 in words is "thirty-one billion, ninety-two million, eighty-five thousand, three hundred seventeen".

Divisors: 1 3 19 29 57 87 191 551 573 1653 3629 5539 10887 16617 98479 105241 295437 315723 1871101 2855891 5613303 8567673 18809489 54261929 56428467 162785787 357380291 545475181 1072140873 1636425543 10364028439 31092085317