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2100312311 = 17605320411
BaseRepresentation
bin111110100110000…
…0011100011110111
312102101002220211212
41331030003203313
513300134443221
6544224552035
7103022234336
oct17514034367
95371086755
102100312311
119886317a9
124a748261b
1327619a066
1415cd2bd1d
15c45c9b5b
hex7d3038f7

2100312311 has 8 divisors (see below), whose sum is σ = 2224336464. Its totient is φ = 1976341120.

The previous prime is 2100312299. The next prime is 2100312323. The reversal of 2100312311 is 1132130012.

It is an interprime number because it is at equal distance from previous prime (2100312299) and next prime (2100312323).

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

It is a de Polignac number, because none of the positive numbers 2k-2100312311 is a prime.

It is a super-2 number, since 2×21003123112 = 8822623607476321442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100312911) 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, 92696 + ... + 113106.

It is an arithmetic number, because the mean of its divisors is an integer number (278042058).

Almost surely, 22100312311 is an apocalyptic number.

2100312311 is a deficient number, since it is larger than the sum of its proper divisors (124024153).

2100312311 is a wasteful number, since it uses less digits than its factorization.

2100312311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26481.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2100312311 is about 45829.1644152498. The cubic root of 2100312311 is about 1280.6426442153.

Adding to 2100312311 its reverse (1132130012), we get a palindrome (3232442323).

The spelling of 2100312311 in words is "two billion, one hundred million, three hundred twelve thousand, three hundred eleven".

Divisors: 1 17 6053 20411 102901 346987 123547783 2100312311