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245030431 = 2319135569
BaseRepresentation
bin11101001101011…
…01111000011111
3122002001211120011
432212231320133
51000211433211
640151504051
76033503302
oct1646557037
9562054504
10245030431
11116349a98
126a088027
133b9c2729
1424784b39
15167a1921
hexe9ade1f

245030431 has 8 divisors (see below), whose sum is σ = 255863520. Its totient is φ = 234212352.

The previous prime is 245030419. The next prime is 245030437. The reversal of 245030431 is 134030542.

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 245030431 - 25 = 245030399 is a prime.

It is a super-2 number, since 2×2450304312 = 120079824232091522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245030437) 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, 41215 + ... + 46783.

It is an arithmetic number, because the mean of its divisors is an integer number (31982940).

Almost surely, 2245030431 is an apocalyptic number.

245030431 is a deficient number, since it is larger than the sum of its proper divisors (10833089).

245030431 is a wasteful number, since it uses less digits than its factorization.

245030431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7505.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 245030431 is about 15653.4478949527. The cubic root of 245030431 is about 625.7583805222.

Adding to 245030431 its reverse (134030542), we get a palindrome (379060973).

The spelling of 245030431 in words is "two hundred forty-five million, thirty thousand, four hundred thirty-one".

Divisors: 1 23 1913 5569 43999 128087 10653497 245030431