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1230134201 = 7915571319
BaseRepresentation
bin100100101010010…
…0101101110111001
310011201201021212222
41021110211232321
510004403243301
6322022013425
742324653042
oct11124455671
93151637788
101230134201
1158141903a
122a3b77275
13167b1557a
14b95358c9
1572ede31b
hex49525bb9

1230134201 has 4 divisors (see below), whose sum is σ = 1245705600. Its totient is φ = 1214562804.

The previous prime is 1230134189. The next prime is 1230134207. The reversal of 1230134201 is 1024310321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1230134201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1230134201.

It is not an unprimeable number, because it can be changed into a prime (1230134207) 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, 7785581 + ... + 7785738.

It is an arithmetic number, because the mean of its divisors is an integer number (311426400).

Almost surely, 21230134201 is an apocalyptic number.

It is an amenable number.

1230134201 is a deficient number, since it is larger than the sum of its proper divisors (15571399).

1230134201 is an equidigital number, since it uses as much as digits as its factorization.

1230134201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15571398.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1230134201 is about 35073.2690378299. The cubic root of 1230134201 is about 1071.4802353441.

Adding to 1230134201 its reverse (1024310321), we get a palindrome (2254444522).

The spelling of 1230134201 in words is "one billion, two hundred thirty million, one hundred thirty-four thousand, two hundred one".

Divisors: 1 79 15571319 1230134201