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231042255 = 3515402817
BaseRepresentation
bin11011100010101…
…10110011001111
3121002202011101120
431301112303033
5433121323010
634532012023
75503553403
oct1561266317
9532664346
10231042255
11109465514
1265461013
1338b357c2
1422983103
151543be70
hexdc56ccf

231042255 has 8 divisors (see below), whose sum is σ = 369667632. Its totient is φ = 123222528.

The previous prime is 231042233. The next prime is 231042269. The reversal of 231042255 is 552240132.

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

It is not a de Polignac number, because 231042255 - 27 = 231042127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7701394 + ... + 7701423.

It is an arithmetic number, because the mean of its divisors is an integer number (46208454).

Almost surely, 2231042255 is an apocalyptic number.

231042255 is a deficient number, since it is larger than the sum of its proper divisors (138625377).

231042255 is a wasteful number, since it uses less digits than its factorization.

231042255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15402825.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 231042255 is about 15200.0741774506. The cubic root of 231042255 is about 613.6166540820.

Adding to 231042255 its reverse (552240132), we get a palindrome (783282387).

The spelling of 231042255 in words is "two hundred thirty-one million, forty-two thousand, two hundred fifty-five".

Divisors: 1 3 5 15 15402817 46208451 77014085 231042255