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2102312211 = 32932391709
BaseRepresentation
bin111110101001110…
…1011110100010011
312102111212112012020
41331103223310103
513301142442321
6544335502523
7103045234056
oct17523536423
95374775166
102102312211
1198977830a
124a8087a43
1327671a42c
1415d2cca9d
15c48724c6
hex7d4ebd13

2102312211 has 8 divisors (see below), whose sum is σ = 2812650960. Its totient is φ = 1396757472.

The previous prime is 2102312197. The next prime is 2102312243. The reversal of 2102312211 is 1122132012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2102312211 - 27 = 2102312083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2102352211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194976 + ... + 1196733.

It is an arithmetic number, because the mean of its divisors is an integer number (351581370).

Almost surely, 22102312211 is an apocalyptic number.

2102312211 is a deficient number, since it is larger than the sum of its proper divisors (710338749).

2102312211 is a wasteful number, since it uses less digits than its factorization.

2102312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392005.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2102312211 is about 45850.9782992686. The cubic root of 2102312211 is about 1281.0489877126.

Adding to 2102312211 its reverse (1122132012), we get a palindrome (3224444223).

The spelling of 2102312211 in words is "two billion, one hundred two million, three hundred twelve thousand, two hundred eleven".

Divisors: 1 3 293 879 2391709 7175127 700770737 2102312211