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2131412401 = 3018170621
BaseRepresentation
bin111111100001010…
…1100010110110001
312111112121222011001
41333002230112301
513331120144101
6551255322001
7103550464216
oct17702542661
95445558131
102131412401
119a4143758
124b5980301
1327c768991
14163105b0d
15c71be901
hex7f0ac5b1

2131412401 has 4 divisors (see below), whose sum is σ = 2131513204. Its totient is φ = 2131311600.

The previous prime is 2131412389. The next prime is 2131412431. The reversal of 2131412401 is 1042141312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1443924001 + 687488400 = 37999^2 + 26220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131412401 - 27 = 2131412273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131412431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5130 + ... + 65491.

It is an arithmetic number, because the mean of its divisors is an integer number (532878301).

Almost surely, 22131412401 is an apocalyptic number.

It is an amenable number.

2131412401 is a deficient number, since it is larger than the sum of its proper divisors (100803).

2131412401 is an equidigital number, since it uses as much as digits as its factorization.

2131412401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100802.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2131412401 is about 46167.2221494861. Note that the first 3 decimals coincide. The cubic root of 2131412401 is about 1286.9326801581.

Adding to 2131412401 its reverse (1042141312), we get a palindrome (3173553713).

The spelling of 2131412401 in words is "two billion, one hundred thirty-one million, four hundred twelve thousand, four hundred one".

Divisors: 1 30181 70621 2131412401