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152115231 = 3228722171
BaseRepresentation
bin10010001000100…
…01100000011111
3101121020020212110
421010101200133
5302420141411
623032205103
73524646432
oct1104214037
9347206773
10152115231
1178957474
1242b39793
132568c918
14162b9819
15d54b2a6
hex911181f

152115231 has 8 divisors (see below), whose sum is σ = 202918144. Its totient is φ = 101361240.

The previous prime is 152115221. The next prime is 152115239. The reversal of 152115231 is 132511251.

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

It is not a de Polignac number, because 152115231 - 25 = 152115199 is a prime.

It is a super-2 number, since 2×1521152312 = 46278087004366722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152115198 and 152115207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152115239) 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 7 ways as a sum of consecutive naturals, for example, 4225 + ... + 17946.

It is an arithmetic number, because the mean of its divisors is an integer number (25364768).

Almost surely, 2152115231 is an apocalyptic number.

152115231 is a deficient number, since it is larger than the sum of its proper divisors (50802913).

152115231 is a wasteful number, since it uses less digits than its factorization.

152115231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24461.

The product of its digits is 300, while the sum is 21.

The square root of 152115231 is about 12333.5003547249. The cubic root of 152115231 is about 533.8151564647.

Adding to 152115231 its reverse (132511251), we get a palindrome (284626482).

The spelling of 152115231 in words is "one hundred fifty-two million, one hundred fifteen thousand, two hundred thirty-one".

Divisors: 1 3 2287 6861 22171 66513 50705077 152115231