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30103041421 = 47640490243
BaseRepresentation
bin11100000010010001…
…111111010110001101
32212200221011221122001
4130002101333112031
5443122334311141
621455032352301
72113660426105
oct340221772615
985627157561
1030103041421
1111848422632
125a01545691
132ab983205b
141657dcc205
15bb2bcea31
hex70247f58d

30103041421 has 4 divisors (see below), whose sum is σ = 30743531712. Its totient is φ = 29462551132.

The previous prime is 30103041337. The next prime is 30103041467. The reversal of 30103041421 is 12414030103.

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: 12414030103 = 15797861957.

It is a cyclic number.

It is not a de Polignac number, because 30103041421 - 29 = 30103040909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103041491) 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, 320245075 + ... + 320245168.

It is an arithmetic number, because the mean of its divisors is an integer number (7685882928).

Almost surely, 230103041421 is an apocalyptic number.

It is an amenable number.

30103041421 is a deficient number, since it is larger than the sum of its proper divisors (640490291).

30103041421 is an equidigital number, since it uses as much as digits as its factorization.

30103041421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640490290.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30103041421 its reverse (12414030103), we get a palindrome (42517071524).

The spelling of 30103041421 in words is "thirty billion, one hundred three million, forty-one thousand, four hundred twenty-one".

Divisors: 1 47 640490243 30103041421