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255203031 = 3175003981
BaseRepresentation
bin11110011011000…
…01011011010111
3122210012122202010
433031201123113
51010312444111
641153515303
76216122106
oct1715413327
9583178663
10255203031
111210678a6
1271572b33
1340b44a15
1425c7203d
1517610aa6
hexf3616d7

255203031 has 8 divisors (see below), whose sum is σ = 360286704. Its totient is φ = 160127360.

The previous prime is 255203021. The next prime is 255203083. The reversal of 255203031 is 130302552.

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

It is a cyclic number.

It is not a de Polignac number, because 255203031 - 25 = 255202999 is a prime.

It is a super-2 number, since 2×2552030312 = 130257174063173922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255202989 and 255203007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255203021) by changing a digit.

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, 2501940 + ... + 2502041.

It is an arithmetic number, because the mean of its divisors is an integer number (45035838).

Almost surely, 2255203031 is an apocalyptic number.

255203031 is a deficient number, since it is larger than the sum of its proper divisors (105083673).

255203031 is a wasteful number, since it uses less digits than its factorization.

255203031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5004001.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 255203031 is about 15975.0753049868. The cubic root of 255203031 is about 634.3008246760.

Adding to 255203031 its reverse (130302552), we get a palindrome (385505583).

The spelling of 255203031 in words is "two hundred fifty-five million, two hundred three thousand, thirty-one".

Divisors: 1 3 17 51 5003981 15011943 85067677 255203031