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255342031 = 7307118819
BaseRepresentation
bin11110011100000…
…11010111001111
3122210110201102021
433032003113033
51010331421111
641200511011
76220241260
oct1716032717
9583421367
10255342031
1112115227a
127161b467
1340b93079
1425caa967
151763bd71
hexf3835cf

255342031 has 8 divisors (see below), whose sum is σ = 292772480. Its totient is φ = 218149848.

The previous prime is 255342019. The next prime is 255342037. The reversal of 255342031 is 130243552.

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

It is not a de Polignac number, because 255342031 - 27 = 255341903 is a prime.

It is a super-2 number, since 2×2553420312 = 130399105590409922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255341987 and 255342005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255342037) 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, 57261 + ... + 61558.

It is an arithmetic number, because the mean of its divisors is an integer number (36596560).

Almost surely, 2255342031 is an apocalyptic number.

255342031 is a deficient number, since it is larger than the sum of its proper divisors (37430449).

255342031 is a wasteful number, since it uses less digits than its factorization.

255342031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119133.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 255342031 is about 15979.4252399766. The cubic root of 255342031 is about 634.4159641290.

Adding to 255342031 its reverse (130243552), we get a palindrome (385585583).

The spelling of 255342031 in words is "two hundred fifty-five million, three hundred forty-two thousand, thirty-one".

Divisors: 1 7 307 2149 118819 831733 36477433 255342031