Search a number
-
+
4280639131 is a prime number
BaseRepresentation
bin1111111100100101…
…0101111010011011
3102001022202222222001
43333021111322123
532231320423011
61544432541431
7211035555316
oct37711257233
912038688861
104280639131
1118a734459a
129b56b1877
13532b00c82
142c872797d
151a0c0c7c1
hexff255e9b

4280639131 has 2 divisors, whose sum is σ = 4280639132. Its totient is φ = 4280639130.

The previous prime is 4280639101. The next prime is 4280639147. The reversal of 4280639131 is 1319360824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4280639131 - 211 = 4280637083 is a prime.

It is a super-2 number, since 2×42806391312 = 36647742739696870322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4280639101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2140319565 + 2140319566.

It is an arithmetic number, because the mean of its divisors is an integer number (2140319566).

Almost surely, 24280639131 is an apocalyptic number.

4280639131 is a deficient number, since it is larger than the sum of its proper divisors (1).

4280639131 is an equidigital number, since it uses as much as digits as its factorization.

4280639131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 4280639131 is about 65426.5934540382. The cubic root of 4280639131 is about 1623.6890894683.

Adding to 4280639131 its reverse (1319360824), we get a palindrome (5599999955).

The spelling of 4280639131 in words is "four billion, two hundred eighty million, six hundred thirty-nine thousand, one hundred thirty-one".