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250112431 = 641390191
BaseRepresentation
bin11101110100001…
…10100110101111
3122102122000202101
432322012212233
51003012044211
640452435531
76124630522
oct1672064657
9572560671
10250112431
11119200198
126b918ba7
133ca8192a
1425308bb9
1516e575c1
hexee869af

250112431 has 4 divisors (see below), whose sum is σ = 250503264. Its totient is φ = 249721600.

The previous prime is 250112411. The next prime is 250112477. The reversal of 250112431 is 134211052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 250112431 - 211 = 250110383 is a prime.

It is a super-2 number, since 2×2501124312 = 125112456281459522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 250112399 and 250112408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250112411) 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 3 ways as a sum of consecutive naturals, for example, 194455 + ... + 195736.

It is an arithmetic number, because the mean of its divisors is an integer number (62625816).

Almost surely, 2250112431 is an apocalyptic number.

250112431 is a deficient number, since it is larger than the sum of its proper divisors (390833).

250112431 is an equidigital number, since it uses as much as digits as its factorization.

250112431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390832.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 250112431 is about 15814.9432815929. The cubic root of 250112431 is about 630.0549469166.

Adding to 250112431 its reverse (134211052), we get a palindrome (384323483).

The spelling of 250112431 in words is "two hundred fifty million, one hundred twelve thousand, four hundred thirty-one".

Divisors: 1 641 390191 250112431