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2102312310001 = 7572777162893
BaseRepresentation
bin11110100101111011100…
…101000001010011110001
321102222102202111201012221
4132211323211001103301
5233421013422410001
64245442224521041
7304613154535111
oct36457345012361
97388382451187
102102312310001
11740649545692
1229b538180181
1312332a139087
1473a76a65041
1539a4521b1a1
hex1e97b9414f1

2102312310001 has 4 divisors (see below), whose sum is σ = 2105089473652. Its totient is φ = 2099535146352.

The previous prime is 2102312309971. The next prime is 2102312310011. The reversal of 2102312310001 is 1000132132012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1139855169600 + 962457140401 = 1067640^2 + 981049^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102312310001 - 237 = 1964873356529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102312310011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388580690 + ... + 1388582203.

It is an arithmetic number, because the mean of its divisors is an integer number (526272368413).

Almost surely, 22102312310001 is an apocalyptic number.

It is an amenable number.

2102312310001 is a deficient number, since it is larger than the sum of its proper divisors (2777163651).

2102312310001 is an equidigital number, since it uses as much as digits as its factorization.

2102312310001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777163650.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2102312310001 its reverse (1000132132012), we get a palindrome (3102444442013).

The spelling of 2102312310001 in words is "two trillion, one hundred two billion, three hundred twelve million, three hundred ten thousand, one".

Divisors: 1 757 2777162893 2102312310001