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31022123002 = 213291781429
BaseRepresentation
bin11100111001000100…
…000000011111111010
32222001222121010112121
4130321010000133322
51002013130414002
622130143431454
72145520460203
oct347104003772
988058533477
1031022123002
111217a1a8192
1260192b558a
132c05079b00
1417040b45aa
15c1872a237
hex7391007fa

31022123002 has 12 divisors (see below), whose sum is σ = 50388005070. Its totient is φ = 14317902768.

The previous prime is 31022122993. The next prime is 31022123051. The reversal of 31022123002 is 20032122013.

It can be written as a sum of positive squares in 3 ways, for example, as 25940001481 + 5082121521 = 161059^2 + 71289^2 .

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 5 ways as a sum of consecutive naturals, for example, 45890377 + ... + 45891052.

Almost surely, 231022123002 is an apocalyptic number.

31022123002 is a deficient number, since it is larger than the sum of its proper divisors (19365882068).

31022123002 is a wasteful number, since it uses less digits than its factorization.

31022123002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91781457 (or 91781444 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31022123002 its reverse (20032122013), we get a palindrome (51054245015).

The spelling of 31022123002 in words is "thirty-one billion, twenty-two million, one hundred twenty-three thousand, two".

Divisors: 1 2 13 26 169 338 91781429 183562858 1193158577 2386317154 15511061501 31022123002