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2131102011 = 32857248641
BaseRepresentation
bin111111100000110…
…0000100100111011
312111112001012101010
41333001200210323
513331030231021
6551244525003
7103545032253
oct17701404473
95445035333
102131102011
119a3a51535
124b5850763
1327c68a60c
14163064963
15c715c976
hex7f06093b

2131102011 has 8 divisors (see below), whose sum is σ = 2842475344. Its totient is φ = 1420231680.

The previous prime is 2131102009. The next prime is 2131102021. The reversal of 2131102011 is 1102011312.

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

It is not a de Polignac number, because 2131102011 - 21 = 2131102009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131102021) 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, 115750 + ... + 132891.

It is an arithmetic number, because the mean of its divisors is an integer number (355309418).

Almost surely, 22131102011 is an apocalyptic number.

2131102011 is a deficient number, since it is larger than the sum of its proper divisors (711373333).

2131102011 is a wasteful number, since it uses less digits than its factorization.

2131102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251501.

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

The square root of 2131102011 is about 46163.8604429916. The cubic root of 2131102011 is about 1286.8702066505.

Adding to 2131102011 its reverse (1102011312), we get a palindrome (3233113323).

The spelling of 2131102011 in words is "two billion, one hundred thirty-one million, one hundred two thousand, eleven".

Divisors: 1 3 2857 8571 248641 745923 710367337 2131102011