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13131342 = 233734739
BaseRepresentation
bin110010000101…
…111001001110
3220201010211000
4302011321032
511330200332
61145241130
7216420540
oct62057116
926633730
1013131342
117459854
1244931a6
132949c33
141a5b690
151245b7c
hexc85e4e

13131342 has 32 divisors (see below), whose sum is σ = 33350400. Its totient is φ = 3751704.

The previous prime is 13131341. The next prime is 13131343. The reversal of 13131342 is 24313131.

13131342 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13131341) and next prime (13131343).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131341) 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, 16992 + ... + 17747.

It is an arithmetic number, because the mean of its divisors is an integer number (1042200).

Almost surely, 213131342 is an apocalyptic number.

13131342 is an abundant number, since it is smaller than the sum of its proper divisors (20219058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13131342 is a wasteful number, since it uses less digits than its factorization.

13131342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34757 (or 34751 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 13131342 is about 3623.7193599946. The cubic root of 13131342 is about 235.9226860602.

Adding to 13131342 its reverse (24313131), we get a palindrome (37444473).

The spelling of 13131342 in words is "thirteen million, one hundred thirty-one thousand, three hundred forty-two".

Divisors: 1 2 3 6 7 9 14 18 21 27 42 54 63 126 189 378 34739 69478 104217 208434 243173 312651 486346 625302 729519 937953 1459038 1875906 2188557 4377114 6565671 13131342