Search a number
-
+
30103038421 = 3753179191449
BaseRepresentation
bin11100000010010001…
…111110100111010101
32212200221011210111221
4130002101332213111
5443122334212141
621455032330341
72113660414261
oct340221764725
985627153457
1030103038421
1111848420355
125a015439b1
132ab9830891
141657dcb0a1
15bb2bcdbd1
hex70247e9d5

30103038421 has 32 divisors (see below), whose sum is σ = 31912704000. Its totient is φ = 28363345920.

The previous prime is 30103038389. The next prime is 30103038431. The reversal of 30103038421 is 12483030103.

It is a cyclic number.

It is not a de Polignac number, because 30103038421 - 25 = 30103038389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103038431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67044405 + ... + 67044853.

It is an arithmetic number, because the mean of its divisors is an integer number (997272000).

Almost surely, 230103038421 is an apocalyptic number.

It is an amenable number.

30103038421 is a deficient number, since it is larger than the sum of its proper divisors (1809665579).

30103038421 is a wasteful number, since it uses less digits than its factorization.

30103038421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 30103038421 its reverse (12483030103), we get a palindrome (42586068524).

The spelling of 30103038421 in words is "thirty billion, one hundred three million, thirty-eight thousand, four hundred twenty-one".

Divisors: 1 37 53 179 191 449 1961 6623 7067 9487 10123 16613 23797 34189 80371 85759 351019 374551 880489 1264993 1812017 2973727 3173083 4259663 4545227 15350861 67044629 157607531 168173399 567981857 813595633 30103038421