Search a number
-
+
20131002104 = 232516375263
BaseRepresentation
bin10010101111111001…
…101011011011111000
31220221222000212100112
4102233321223123320
5312212014031404
613125325123452
71311602460143
oct225771533370
956858025315
1020131002104
1185a0475924
123a999b9588
131b8a884585
14d8d86705a
157cc4e656e
hex4afe6b6f8

20131002104 has 8 divisors (see below), whose sum is σ = 37745628960. Its totient is φ = 10065501048.

The previous prime is 20131002097. The next prime is 20131002139. The reversal of 20131002104 is 40120013102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×201310021042 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258187624 + ... + 1258187639.

It is an arithmetic number, because the mean of its divisors is an integer number (4718203620).

Almost surely, 220131002104 is an apocalyptic number.

It is an amenable number.

20131002104 is a deficient number, since it is larger than the sum of its proper divisors (17614626856).

20131002104 is a wasteful number, since it uses less digits than its factorization.

20131002104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516375269 (or 2516375265 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20131002104 its reverse (40120013102), we get a palindrome (60251015206).

The spelling of 20131002104 in words is "twenty billion, one hundred thirty-one million, two thousand, one hundred four".

Divisors: 1 2 4 8 2516375263 5032750526 10065501052 20131002104