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2131201301 = 2638103427
BaseRepresentation
bin111111100000111…
…1000110100010101
312111112020020120112
41333001320310111
513331041420201
6551251012405
7103545624605
oct17701706425
95445206515
102131201301
119a400a099
124b589a105
1327c6c3878
1416308cc05
15c717c0bb
hex7f078d15

2131201301 has 4 divisors (see below), whose sum is σ = 2139304992. Its totient is φ = 2123097612.

The previous prime is 2131201273. The next prime is 2131201307. The reversal of 2131201301 is 1031021312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2131201301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131201307) 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, 4051451 + ... + 4051976.

It is an arithmetic number, because the mean of its divisors is an integer number (534826248).

Almost surely, 22131201301 is an apocalyptic number.

It is an amenable number.

2131201301 is a deficient number, since it is larger than the sum of its proper divisors (8103691).

2131201301 is an equidigital number, since it uses as much as digits as its factorization.

2131201301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8103690.

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

The square root of 2131201301 is about 46164.9358387944. The cubic root of 2131201301 is about 1286.8901918284.

Adding to 2131201301 its reverse (1031021312), we get a palindrome (3162222613).

The spelling of 2131201301 in words is "two billion, one hundred thirty-one million, two hundred one thousand, three hundred one".

Divisors: 1 263 8103427 2131201301