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15105031230 = 2351573207013
BaseRepresentation
bin11100001000101010…
…00111110000111110
31102222200210002110010
432010111013300332
5221413341444410
610534505124050
71043213434632
oct160425076076
942880702403
1015105031230
11645143a593
122b16789626
131569531903
14a34164dc2
155d615ec20
hex384547c3e

15105031230 has 32 divisors (see below), whose sum is σ = 36482991264. Its totient is φ = 4002350976.

The previous prime is 15105031229. The next prime is 15105031237. The reversal of 15105031230 is 3213050151.

15105031230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15105031197 and 15105031206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15105031237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1598797 + ... + 1608216.

It is an arithmetic number, because the mean of its divisors is an integer number (1140093477).

Almost surely, 215105031230 is an apocalyptic number.

15105031230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15105031230 is an abundant number, since it is smaller than the sum of its proper divisors (21377960034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15105031230 is a wasteful number, since it uses less digits than its factorization.

15105031230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3207180.

The product of its (nonzero) digits is 450, while the sum is 21.

Adding to 15105031230 its reverse (3213050151), we get a palindrome (18318081381).

The spelling of 15105031230 in words is "fifteen billion, one hundred five million, thirty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 157 314 471 785 942 1570 2355 4710 3207013 6414026 9621039 16035065 19242078 32070130 48105195 96210390 503501041 1007002082 1510503123 2517505205 3021006246 5035010410 7552515615 15105031230