Search a number
-
+
2130031213 is a prime number
BaseRepresentation
bin111111011110101…
…1011001001101101
312111110000210111221
41332331123021231
513330241444323
6551205543341
7103532652352
oct17675331155
95443023457
102130031213
119a338aa82
124b5414b51
1327c3a40cb
14162c66629
15c6eea55d
hex7ef5b26d

2130031213 has 2 divisors, whose sum is σ = 2130031214. Its totient is φ = 2130031212.

The previous prime is 2130031181. The next prime is 2130031223. The reversal of 2130031213 is 3121300312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1965858244 + 164172969 = 44338^2 + 12813^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130031213 - 25 = 2130031181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130031223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065015606 + 1065015607.

It is an arithmetic number, because the mean of its divisors is an integer number (1065015607).

Almost surely, 22130031213 is an apocalyptic number.

It is an amenable number.

2130031213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130031213 is an equidigital number, since it uses as much as digits as its factorization.

2130031213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2130031213 is about 46152.2611905419. The cubic root of 2130031213 is about 1286.6546360373.

Adding to 2130031213 its reverse (3121300312), we get a palindrome (5251331525).

The spelling of 2130031213 in words is "two billion, one hundred thirty million, thirty-one thousand, two hundred thirteen".