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1031431244305 = 57116414179473
BaseRepresentation
bin11110000001001100001…
…01111100101000010001
310122121022012212001221111
433000212011330220101
5113344332344304210
62105455531053321
7134342553630550
oct17004605745021
93577265761844
101031431244305
11368478058a60
12147a942a1241
137635702b857
1437cc89b7d97
151bc6ad5788a
hexf02617ca11

1031431244305 has 32 divisors (see below), whose sum is σ = 1545536049408. Its totient is φ = 641966899200.

The previous prime is 1031431244287. The next prime is 1031431244321. The reversal of 1031431244305 is 5034421341301.

It is not a de Polignac number, because 1031431244305 - 27 = 1031431244177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1842952 + ... + 2336521.

It is an arithmetic number, because the mean of its divisors is an integer number (48298001544).

Almost surely, 21031431244305 is an apocalyptic number.

It is an amenable number.

1031431244305 is a deficient number, since it is larger than the sum of its proper divisors (514104805103).

1031431244305 is a wasteful number, since it uses less digits than its factorization.

1031431244305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180137.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 1031431244305 its reverse (5034421341301), we get a palindrome (6065852585606).

The spelling of 1031431244305 in words is "one trillion, thirty-one billion, four hundred thirty-one million, two hundred forty-four thousand, three hundred five".

Divisors: 1 5 7 11 35 55 77 385 641 3205 4487 7051 22435 35255 49357 246785 4179473 20897365 29256311 45974203 146281555 229871015 321819421 1609097105 2679042193 13395210965 18753295351 29469464123 93766476755 147347320615 206286248861 1031431244305