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31100132330 = 25197311319843
BaseRepresentation
bin11100111101101101…
…100101101111101010
32222021102101102012222
4130331231211233222
51002143113213310
622142011434042
72150455522511
oct347555455752
988242342188
1031100132330
111220a239803
12603b455922
132c18291087
1417105bd678
15c204d9055
hex73db65bea

31100132330 has 64 divisors (see below), whose sum is σ = 60265434240. Its totient is φ = 11520423936.

The previous prime is 31100132269. The next prime is 31100132351. The reversal of 31100132330 is 3323100113.

It is a super-2 number, since 2×311001323302 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31100132299 and 31100132308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1557389 + ... + 1577231.

It is an arithmetic number, because the mean of its divisors is an integer number (941647410).

Almost surely, 231100132330 is an apocalyptic number.

31100132330 is a deficient number, since it is larger than the sum of its proper divisors (29165301910).

31100132330 is a wasteful number, since it uses less digits than its factorization.

31100132330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20055.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31100132330 its reverse (3323100113), we get a palindrome (34423232443).

The spelling of 31100132330 in words is "thirty-one billion, one hundred million, one hundred thirty-two thousand, three hundred thirty".

Divisors: 1 2 5 10 19 38 73 95 113 146 190 226 365 565 730 1130 1387 2147 2774 4294 6935 8249 10735 13870 16498 19843 21470 39686 41245 82490 99215 156731 198430 313462 377017 754034 783655 1448539 1567310 1885085 2242259 2897078 3770170 4484518 7242695 11211295 14485390 22422590 27522241 42602921 55044482 85205842 137611205 163684907 213014605 275222410 327369814 426029210 818424535 1636849070 3110013233 6220026466 15550066165 31100132330