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250320031 = 13153112577
BaseRepresentation
bin11101110101110…
…01010010011111
3122110000120112021
432322321102133
51003040220111
640501121011
76126454003
oct1672712237
9573016467
10250320031
11119332165
126b9b9167
133cb25280
1425360703
1516e98d71
hexeeb949f

250320031 has 8 divisors (see below), whose sum is σ = 269772944. Its totient is φ = 230895360.

The previous prime is 250320029. The next prime is 250320089. The reversal of 250320031 is 130023052.

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 250320031 - 21 = 250320029 is a prime.

It is a super-2 number, since 2×2503200312 = 125320235839681922, 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 = 250319987 and 250320014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250320011) 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, 13615 + ... + 26191.

It is an arithmetic number, because the mean of its divisors is an integer number (33721618).

Almost surely, 2250320031 is an apocalyptic number.

250320031 is a deficient number, since it is larger than the sum of its proper divisors (19452913).

250320031 is a wasteful number, since it uses less digits than its factorization.

250320031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14121.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 250320031 is about 15821.5053329321. The cubic root of 250320031 is about 630.2292195216.

Adding to 250320031 its reverse (130023052), we get a palindrome (380343083).

The spelling of 250320031 in words is "two hundred fifty million, three hundred twenty thousand, thirty-one".

Divisors: 1 13 1531 12577 19903 163501 19255387 250320031