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31023314244 = 22321366289133
BaseRepresentation
bin11100111001001000…
…100011010101000100
32222002001211122121200
4130321020203111010
51002013432023434
622130225142500
72145533551206
oct347110432504
988061748550
1031023314244
111217a94118a
12601978aa30
132c053a60a0
141704304776
15c188b3199
hex739223544

31023314244 has 36 divisors (see below), whose sum is σ = 84452356716. Its totient is φ = 9545635008.

The previous prime is 31023314237. The next prime is 31023314249. The reversal of 31023314244 is 44241332013.

31023314244 is a `hidden beast` number, since 3 + 1 + 0 + 233 + 1 + 424 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8370054144 + 22653260100 = 91488^2 + 150510^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (31023314249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33144099 + ... + 33145034.

Almost surely, 231023314244 is an apocalyptic number.

It is an amenable number.

31023314244 is an abundant number, since it is smaller than the sum of its proper divisors (53429042472).

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

31023314244 is a wasteful number, since it uses less digits than its factorization.

31023314244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66289156 (or 66289151 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 31023314244 its reverse (44241332013), we get a palindrome (75264646257).

The spelling of 31023314244 in words is "thirty-one billion, twenty-three million, three hundred fourteen thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 9 12 13 18 26 36 39 52 78 117 156 234 468 66289133 132578266 198867399 265156532 397734798 596602197 795469596 861758729 1193204394 1723517458 2386408788 2585276187 3447034916 5170552374 7755828561 10341104748 15511657122 31023314244