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1230345241 = 9471299203
BaseRepresentation
bin100100101010101…
…1001010000011001
310011202010000101021
41021111121100121
510004432021431
6322030322441
742326522236
oct11125312031
93152100337
101230345241
11581552654
122a4059421
13167b8a648
14b958c78d
1573031b11
hex49559419

1230345241 has 4 divisors (see below), whose sum is σ = 1231645392. Its totient is φ = 1229045092.

The previous prime is 1230345227. The next prime is 1230345251. The reversal of 1230345241 is 1425430321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1425430321 = 7203632903.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1230345241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230345251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648655 + ... + 650548.

It is an arithmetic number, because the mean of its divisors is an integer number (307911348).

Almost surely, 21230345241 is an apocalyptic number.

It is an amenable number.

1230345241 is a deficient number, since it is larger than the sum of its proper divisors (1300151).

1230345241 is an equidigital number, since it uses as much as digits as its factorization.

1230345241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300150.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1230345241 is about 35076.2774678272. The cubic root of 1230345241 is about 1071.5415056940.

Adding to 1230345241 its reverse (1425430321), we get a palindrome (2655775562).

The spelling of 1230345241 in words is "one billion, two hundred thirty million, three hundred forty-five thousand, two hundred forty-one".

Divisors: 1 947 1299203 1230345241