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155342313 = 3374311907
BaseRepresentation
bin10010100001001…
…01010111101001
3101211022012121000
421100211113221
5304231423223
623225305213
73564250020
oct1120452751
9354265530
10155342313
117a760a85
1244035209
132624c739
14168b98b7
15d987543
hex94255e9

155342313 has 32 divisors (see below), whose sum is σ = 263761920. Its totient is φ = 88514640.

The previous prime is 155342293. The next prime is 155342329. The reversal of 155342313 is 313243551.

155342313 is a `hidden beast` number, since 1 + 5 + 5 + 342 + 313 = 666.

It is not a de Polignac number, because 155342313 - 25 = 155342281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (155342353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80506 + ... + 82412.

It is an arithmetic number, because the mean of its divisors is an integer number (8242560).

Almost surely, 2155342313 is an apocalyptic number.

It is an amenable number.

155342313 is a deficient number, since it is larger than the sum of its proper divisors (108419607).

155342313 is a wasteful number, since it uses less digits than its factorization.

155342313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354 (or 2348 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 155342313 is about 12463.6396369600. The cubic root of 155342313 is about 537.5636851167.

Adding to 155342313 its reverse (313243551), we get a palindrome (468585864).

The spelling of 155342313 in words is "one hundred fifty-five million, three hundred forty-two thousand, three hundred thirteen".

Divisors: 1 3 7 9 21 27 63 189 431 1293 1907 3017 3879 5721 9051 11637 13349 17163 27153 40047 51489 81459 120141 360423 821917 2465751 5753419 7397253 17260257 22191759 51780771 155342313