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242310031 = 4312744371
BaseRepresentation
bin11100111000101…
…01101110001111
3121212221121212121
432130111232033
5444012410111
640013313411
76001413145
oct1634255617
9555847777
10242310031
11114861127
1269195867
133b27c422
1424277595
1516415871
hexe715b8f

242310031 has 8 divisors (see below), whose sum is σ = 249903104. Its totient is φ = 234806040.

The previous prime is 242310023. The next prime is 242310073. The reversal of 242310031 is 130013242.

It is a happy number.

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 242310031 - 23 = 242310023 is a prime.

It is a super-3 number, since 3×2423100313 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242309987 and 242310014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242316031) 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, 16725 + ... + 27646.

It is an arithmetic number, because the mean of its divisors is an integer number (31237888).

Almost surely, 2242310031 is an apocalyptic number.

242310031 is a deficient number, since it is larger than the sum of its proper divisors (7593073).

242310031 is a wasteful number, since it uses less digits than its factorization.

242310031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44541.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 242310031 is about 15566.3107703784. The cubic root of 242310031 is about 623.4339724898.

Adding to 242310031 its reverse (130013242), we get a palindrome (372323273).

The spelling of 242310031 in words is "two hundred forty-two million, three hundred ten thousand, thirty-one".

Divisors: 1 43 127 5461 44371 1907953 5635117 242310031