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135242331 = 3722512861
BaseRepresentation
bin10000000111110…
…10001001011011
3100102111000121020
420003322021123
5234110223311
621230413523
73231353340
oct1003721133
9312430536
10135242331
116a382624
12393612a3
1322032963
1413d667c7
15bd16c06
hex80fa25b

135242331 has 16 divisors (see below), whose sum is σ = 206247168. Its totient is φ = 77220000.

The previous prime is 135242321. The next prime is 135242339. The reversal of 135242331 is 133242531.

It is not a de Polignac number, because 135242331 - 25 = 135242299 is a prime.

It is a super-2 number, since 2×1352423312 = 36580976188627122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135242339) 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 15 ways as a sum of consecutive naturals, for example, 45841 + ... + 48701.

It is an arithmetic number, because the mean of its divisors is an integer number (12890448).

Almost surely, 2135242331 is an apocalyptic number.

135242331 is a deficient number, since it is larger than the sum of its proper divisors (71004837).

135242331 is a wasteful number, since it uses less digits than its factorization.

135242331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5122.

The product of its digits is 2160, while the sum is 24.

The square root of 135242331 is about 11629.3736288761. The cubic root of 135242331 is about 513.2995488063.

Adding to 135242331 its reverse (133242531), we get a palindrome (268484862).

The spelling of 135242331 in words is "one hundred thirty-five million, two hundred forty-two thousand, three hundred thirty-one".

Divisors: 1 3 7 21 2251 2861 6753 8583 15757 20027 47271 60081 6440111 19320333 45080777 135242331