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2031100122 = 231204328109
BaseRepresentation
bin111100100010000…
…0010000011011010
312020112212120120110
41321010002003122
513124430200442
6533313305150
7101222031462
oct17104020332
95215776513
102031100122
11952559647
124882651b6
13264a45cbc
14153a72ba2
15bd4a769c
hex791020da

2031100122 has 16 divisors (see below), whose sum is σ = 4062682080. Its totient is φ = 676953072.

The previous prime is 2031100121. The next prime is 2031100139. The reversal of 2031100122 is 2210011302.

It is a junction number, because it is equal to n+sod(n) for n = 2031100098 and 2031100107.

It is not an unprimeable number, because it can be changed into a prime (2031100121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58204 + ... + 86312.

It is an arithmetic number, because the mean of its divisors is an integer number (253917630).

Almost surely, 22031100122 is an apocalyptic number.

2031100122 is an abundant number, since it is smaller than the sum of its proper divisors (2031581958).

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

2031100122 is a wasteful number, since it uses less digits than its factorization.

2031100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40157.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2031100122 is about 45067.7281655066. The cubic root of 2031100122 is about 1266.4181052285.

Adding to 2031100122 its reverse (2210011302), we get a palindrome (4241111424).

The spelling of 2031100122 in words is "two billion, thirty-one million, one hundred thousand, one hundred twenty-two".

Divisors: 1 2 3 6 12043 24086 28109 36129 56218 72258 84327 168654 338516687 677033374 1015550061 2031100122