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431120530 = 2543112053
BaseRepresentation
bin11001101100100…
…110000010010010
31010001020012012001
4121230212002102
51340331324110
6110440224214
713453315111
oct3154460222
91101205161
10431120530
112013a1265
1210046b06a
136b419609
1441385c78
1527cae63a
hex19b26092

431120530 has 8 divisors (see below), whose sum is σ = 776016972. Its totient is φ = 172448208.

The previous prime is 431120483. The next prime is 431120551. The reversal of 431120530 is 35021134.

It can be written as a sum of positive squares in 2 ways, for example, as 426381201 + 4739329 = 20649^2 + 2177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4311205302 = 371729822774961800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 431120498 and 431120507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21556017 + ... + 21556036.

Almost surely, 2431120530 is an apocalyptic number.

431120530 is a deficient number, since it is larger than the sum of its proper divisors (344896442).

431120530 is a wasteful number, since it uses less digits than its factorization.

431120530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43112060.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 431120530 is about 20763.4421520132. The cubic root of 431120530 is about 755.4392894034.

Adding to 431120530 its reverse (35021134), we get a palindrome (466141664).

The spelling of 431120530 in words is "four hundred thirty-one million, one hundred twenty thousand, five hundred thirty".

Divisors: 1 2 5 10 43112053 86224106 215560265 431120530