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31100100230 = 254197781999
BaseRepresentation
bin11100111101101101…
…011101111010000110
32222021102022210012002
4130331231131322012
51002143111201410
622142011025302
72150455330103
oct347555357206
988242283162
1031100100230
111220a217681
12603b43b232
132c1827c594
1417105b1aaa
15c204ce7a5
hex73db5de86

31100100230 has 32 divisors (see below), whose sum is σ = 57936816000. Its totient is φ = 12011489280.

The previous prime is 31100100223. The next prime is 31100100253. The reversal of 31100100230 is 3200100113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351230 + ... + 430769.

It is an arithmetic number, because the mean of its divisors is an integer number (1810525500).

Almost surely, 231100100230 is an apocalyptic number.

31100100230 is a deficient number, since it is larger than the sum of its proper divisors (26836715770).

31100100230 is a wasteful number, since it uses less digits than its factorization.

31100100230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782144.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 31100100230 its reverse (3200100113), we get a palindrome (34300200343).

The spelling of 31100100230 in words is "thirty-one billion, one hundred million, one hundred thousand, two hundred thirty".

Divisors: 1 2 5 10 41 82 97 194 205 410 485 970 3977 7954 19885 39770 781999 1563998 3909995 7819990 32061959 64123918 75853903 151707806 160309795 320619590 379269515 758539030 3110010023 6220020046 15550050115 31100100230