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2130131231 is a prime number
BaseRepresentation
bin111111011110111…
…0011100100011111
312111110012212201022
41332331303210133
513330303144411
6551212034355
7103533550064
oct17675634437
95443185638
102130131231
119a3449138
124b54629bb
1327c40a7a7
14162c90c6b
15c7019edb
hex7ef7391f

2130131231 has 2 divisors, whose sum is σ = 2130131232. Its totient is φ = 2130131230.

The previous prime is 2130131209. The next prime is 2130131233. The reversal of 2130131231 is 1321310312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2130131231 - 210 = 2130130207 is a prime.

It is a super-2 number, since 2×21301312312 = 9074918122563150722, which contains 22 as substring.

Together with 2130131233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130131233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065065615 + 1065065616.

It is an arithmetic number, because the mean of its divisors is an integer number (1065065616).

Almost surely, 22130131231 is an apocalyptic number.

2130131231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130131231 is an equidigital number, since it uses as much as digits as its factorization.

2130131231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2130131231 is about 46153.3447433661. The cubic root of 2130131231 is about 1286.6747744917.

Adding to 2130131231 its reverse (1321310312), we get a palindrome (3451441543).

The spelling of 2130131231 in words is "two billion, one hundred thirty million, one hundred thirty-one thousand, two hundred thirty-one".