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242910031 = 7132669341
BaseRepresentation
bin11100111101010…
…00001101001111
3121221002002220211
432132220031033
5444141110111
640034223251
76006462340
oct1636501517
9557062824
10242910031
111151309a1
1269424b27
133b42c560
14243920c7
15164d3521
hexe7a834f

242910031 has 8 divisors (see below), whose sum is σ = 298966304. Its totient is φ = 192192480.

The previous prime is 242910029. The next prime is 242910049. The reversal of 242910031 is 130019242.

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 242910031 - 21 = 242910029 is a prime.

It is a super-2 number, since 2×2429100312 = 118010566320841922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242909984 and 242910011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242910011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1334580 + ... + 1334761.

It is an arithmetic number, because the mean of its divisors is an integer number (37370788).

Almost surely, 2242910031 is an apocalyptic number.

242910031 is a deficient number, since it is larger than the sum of its proper divisors (56056273).

242910031 is a wasteful number, since it uses less digits than its factorization.

242910031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669361.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 242910031 is about 15585.5712439423. The cubic root of 242910031 is about 623.9481238035.

Adding to 242910031 its reverse (130019242), we get a palindrome (372929273).

The spelling of 242910031 in words is "two hundred forty-two million, nine hundred ten thousand, thirty-one".

Divisors: 1 7 13 91 2669341 18685387 34701433 242910031