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13131010 = 2510113001
BaseRepresentation
bin110010000101…
…110100000010
3220201010100201
4302011310002
511330143020
61145235414
7216416554
oct62056402
926633321
1013131010
117459582
124492b6a
132949a39
141a5b4d4
151245a0a
hexc85d02

13131010 has 16 divisors (see below), whose sum is σ = 23871672. Its totient is φ = 5200000.

The previous prime is 13130989. The next prime is 13131017. The reversal of 13131010 is 1013131.

It can be written as a sum of positive squares in 4 ways, for example, as 10029889 + 3101121 = 3167^2 + 1761^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (13131017) 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, 5491 + ... + 7510.

Almost surely, 213131010 is an apocalyptic number.

13131010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13131010 is a deficient number, since it is larger than the sum of its proper divisors (10740662).

13131010 is a wasteful number, since it uses less digits than its factorization.

13131010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13109.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 13131010 is about 3623.6735504181. The cubic root of 13131010 is about 235.9206977640.

Adding to 13131010 its reverse (1013131), we get a palindrome (14144141).

The spelling of 13131010 in words is "thirteen million, one hundred thirty-one thousand, ten".

Divisors: 1 2 5 10 101 202 505 1010 13001 26002 65005 130010 1313101 2626202 6565505 13131010