Search a number
-
+
2130310331 = 9629221239
BaseRepresentation
bin111111011111001…
…1111010010111011
312111110112222101122
41332332133102323
513330324412311
6551215535455
7103535224202
oct17676372273
95443488348
102130310331
119a3560756
124b552a58b
1327c471176
14162cda239
15c70530db
hex7ef9f4bb

2130310331 has 4 divisors (see below), whose sum is σ = 2130541200. Its totient is φ = 2130079464.

The previous prime is 2130310291. The next prime is 2130310339. The reversal of 2130310331 is 1330130312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2130310331 - 218 = 2130048187 is a prime.

It is a super-2 number, since 2×21303103312 = 9076444212730659122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2130310339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100991 + ... + 120248.

It is an arithmetic number, because the mean of its divisors is an integer number (532635300).

Almost surely, 22130310331 is an apocalyptic number.

2130310331 is a deficient number, since it is larger than the sum of its proper divisors (230869).

2130310331 is an equidigital number, since it uses as much as digits as its factorization.

2130310331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230868.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 2130310331 is about 46155.2849736626. The cubic root of 2130310331 is about 1286.7108343974.

Adding to 2130310331 its reverse (1330130312), we get a palindrome (3460440643).

The spelling of 2130310331 in words is "two billion, one hundred thirty million, three hundred ten thousand, three hundred thirty-one".

Divisors: 1 9629 221239 2130310331