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431030013 = 3143676671
BaseRepresentation
bin11001101100001…
…111111011111101
31010001001121000120
4121230033323331
51340320430023
6110434245153
713452460161
oct3154177375
91101047016
10431030013
1120133a257
121004267b9
136b3b735b
1441360ca1
1527c928e3
hex19b0fefd

431030013 has 4 divisors (see below), whose sum is σ = 574706688. Its totient is φ = 287353340.

The previous prime is 431030011. The next prime is 431030021. The reversal of 431030013 is 310030134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 431030013 - 21 = 431030011 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 431029974 and 431030001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431030011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71838333 + ... + 71838338.

It is an arithmetic number, because the mean of its divisors is an integer number (143676672).

Almost surely, 2431030013 is an apocalyptic number.

It is an amenable number.

431030013 is a deficient number, since it is larger than the sum of its proper divisors (143676675).

431030013 is a wasteful number, since it uses less digits than its factorization.

431030013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143676674.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 431030013 is about 20761.2623171136. The cubic root of 431030013 is about 755.3864156480.

Adding to 431030013 its reverse (310030134), we get a palindrome (741060147).

The spelling of 431030013 in words is "four hundred thirty-one million, thirty thousand, thirteen".

Divisors: 1 3 143676671 431030013