Search a number
-
+
2013315531 = 310741914969
BaseRepresentation
bin111100000000000…
…1100000111001011
312012022102000200220
41320000030013023
513110402044111
6531440201123
7100614620403
oct17000140713
95168360626
102013315531
11943511837
124823091a3
1326115a086
14151563803
15bbb42e06
hex7800c1cb

2013315531 has 16 divisors (see below), whose sum is σ = 2716156800. Its totient is φ = 1326404288.

The previous prime is 2013315509. The next prime is 2013315533. The reversal of 2013315531 is 1355133102.

It is a cyclic number.

It is not a de Polignac number, because 2013315531 - 26 = 2013315467 is a prime.

It is a super-2 number, since 2×20133155312 = 8106878854731623922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2013315533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127015 + ... + 141983.

It is an arithmetic number, because the mean of its divisors is an integer number (169759800).

Almost surely, 22013315531 is an apocalyptic number.

2013315531 is a deficient number, since it is larger than the sum of its proper divisors (702841269).

2013315531 is a wasteful number, since it uses less digits than its factorization.

2013315531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15498.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 2013315531 is about 44869.9847448158. The cubic root of 2013315531 is about 1262.7109538157.

Adding to 2013315531 its reverse (1355133102), we get a palindrome (3368448633).

The spelling of 2013315531 in words is "two billion, thirteen million, three hundred fifteen thousand, five hundred thirty-one".

Divisors: 1 3 107 321 419 1257 14969 44833 44907 134499 1601683 4805049 6272011 18816033 671105177 2013315531