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31302522050 = 25213121912
BaseRepresentation
bin11101001001110001…
…101001010011000010
32222210112012212201112
4131021301221103002
51003101421201200
622214041403322
72155464022142
oct351161512302
988715185645
1031302522050
1112303504138
126097199542
132c4b1a3cc7
14172d424922
15c33166535
hex749c694c2

31302522050 has 54 divisors (see below), whose sum is σ = 58979315577. Its totient is φ = 12360374000.

The previous prime is 31302522023. The next prime is 31302522067. The reversal of 31302522050 is 5022520313.

It can be written as a sum of positive squares in 2 ways, for example, as 30676471609 + 626050441 = 175147^2 + 25021^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=125105.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 163887455 + ... + 163887645.

Almost surely, 231302522050 is an apocalyptic number.

31302522050 is a deficient number, since it is larger than the sum of its proper divisors (27676793527).

31302522050 is an equidigital number, since it uses as much as digits as its factorization.

31302522050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

Multiplying 31302522050 by its product of nonzero digits (1800), we get a square (56344539690000 = 75063002).

The spelling of 31302522050 in words is "thirty-one billion, three hundred two million, five hundred twenty-two thousand, fifty".

Divisors: 1 2 5 10 25 50 131 191 262 382 655 955 1310 1910 3275 4775 6550 9550 17161 25021 34322 36481 50042 72962 85805 125105 171610 182405 250210 364810 429025 625525 858050 912025 1251050 1824050 3277751 4779011 6555502 9558022 16388755 23895055 32777510 47790110 81943775 119475275 163887550 238950550 626050441 1252100882 3130252205 6260504410 15651261025 31302522050