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2130122131 = 7512836381
BaseRepresentation
bin111111011110111…
…0001010110010011
312111110012102020021
41332331301112103
513330302402011
6551211524311
7103533511414
oct17675612623
95443172207
102130122131
119a3442315
124b5459697
1327c4065c7
14162c8b80b
15c7017471
hex7ef71593

2130122131 has 4 divisors (see below), whose sum is σ = 2132959264. Its totient is φ = 2127285000.

The previous prime is 2130122107. The next prime is 2130122143. The reversal of 2130122131 is 1312210312.

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 2130122131 - 29 = 2130121619 is a prime.

It is a super-2 number, since 2×21301221312 = 9074840585951962322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2130122171) 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, 1417440 + ... + 1418941.

It is an arithmetic number, because the mean of its divisors is an integer number (533239816).

Almost surely, 22130122131 is an apocalyptic number.

2130122131 is a deficient number, since it is larger than the sum of its proper divisors (2837133).

2130122131 is an equidigital number, since it uses as much as digits as its factorization.

2130122131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837132.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2130122131 is about 46153.2461588565. The cubic root of 2130122131 is about 1286.6729422482.

Adding to 2130122131 its reverse (1312210312), we get a palindrome (3442332443).

The spelling of 2130122131 in words is "two billion, one hundred thirty million, one hundred twenty-two thousand, one hundred thirty-one".

Divisors: 1 751 2836381 2130122131