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2130443131 = 13915326929
BaseRepresentation
bin111111011111011…
…1111101101111011
312111110210201120011
41332332333231323
513330343140011
6551222442351
7103536316315
oct17676775573
95443721504
102130443131
119a3641503
124b55933b7
1327c4b974b
14162d327b5
15c707c621
hex7efbfb7b

2130443131 has 4 divisors (see below), whose sum is σ = 2145770200. Its totient is φ = 2115116064.

The previous prime is 2130443123. The next prime is 2130443177. The reversal of 2130443131 is 1313440312.

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 2130443131 - 23 = 2130443123 is a prime.

It is a super-2 number, since 2×21304431312 = 9077575868850166322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2130473131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7663326 + ... + 7663603.

It is an arithmetic number, because the mean of its divisors is an integer number (536442550).

Almost surely, 22130443131 is an apocalyptic number.

2130443131 is a deficient number, since it is larger than the sum of its proper divisors (15327069).

2130443131 is a wasteful number, since it uses less digits than its factorization.

2130443131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15327068.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2130443131 is about 46156.7235730614. The cubic root of 2130443131 is about 1286.7375709790.

Adding to 2130443131 its reverse (1313440312), we get a palindrome (3443883443).

The spelling of 2130443131 in words is "two billion, one hundred thirty million, four hundred forty-three thousand, one hundred thirty-one".

Divisors: 1 139 15326929 2130443131