Search a number
-
+
1531102105 = 51323555417
BaseRepresentation
bin101101101000010…
…1100001110011001
310221201001001020101
41123100230032121
511113430231410
6411532455401
752641103351
oct13320541631
93851031211
101531102105
117162a3745
1236891a561
131b5291aa0
141074bbb61
158e63ed3a
hex5b42c399

1531102105 has 8 divisors (see below), whose sum is σ = 1978655112. Its totient is φ = 1130659968.

The previous prime is 1531102091. The next prime is 1531102109. The reversal of 1531102105 is 5012011351.

It can be written as a sum of positive squares in 4 ways, for example, as 132641289 + 1398460816 = 11517^2 + 37396^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1531102105 - 211 = 1531100057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1531102109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11777644 + ... + 11777773.

It is an arithmetic number, because the mean of its divisors is an integer number (247331889).

Almost surely, 21531102105 is an apocalyptic number.

It is an amenable number.

1531102105 is a deficient number, since it is larger than the sum of its proper divisors (447553007).

1531102105 is a wasteful number, since it uses less digits than its factorization.

1531102105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23555435.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1531102105 is about 39129.2998276228. The cubic root of 1531102105 is about 1152.5719637668.

Adding to 1531102105 its reverse (5012011351), we get a palindrome (6543113456).

The spelling of 1531102105 in words is "one billion, five hundred thirty-one million, one hundred two thousand, one hundred five".

Divisors: 1 5 13 65 23555417 117777085 306220421 1531102105