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13131022 = 223285457
BaseRepresentation
bin110010000101…
…110100001110
3220201010101011
4302011310032
511330143042
61145235434
7216416602
oct62056416
926633334
1013131022
117459593
124492b7a
132949a48
141a5b502
151245a17
hexc85d0e

13131022 has 8 divisors (see below), whose sum is σ = 20552976. Its totient is φ = 6280032.

The previous prime is 13131017. The next prime is 13131023. The reversal of 13131022 is 22013131.

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

It is a junction number, because it is equal to n+sod(n) for n = 13130993 and 13131011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142683 + ... + 142774.

It is an arithmetic number, because the mean of its divisors is an integer number (2569122).

Almost surely, 213131022 is an apocalyptic number.

13131022 is a deficient number, since it is larger than the sum of its proper divisors (7421954).

13131022 is a wasteful number, since it uses less digits than its factorization.

13131022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285482.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 13131022 is about 3623.6752061961. The cubic root of 13131022 is about 235.9207696307.

Adding to 13131022 its reverse (22013131), we get a palindrome (35144153).

The spelling of 13131022 in words is "thirteen million, one hundred thirty-one thousand, twenty-two".

Divisors: 1 2 23 46 285457 570914 6565511 13131022