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4242131431 = 172313779193
BaseRepresentation
bin1111110011011001…
…1100100111100111
3101221122022121022221
43330312130213213
532141441201211
61540535333211
7210060344056
oct37466344747
911848277287
104242131431
11188763314a
129a4821207
13527b3a755
142c358239d
1519c652c71
hexfcd9c9e7

4242131431 has 16 divisors (see below), whose sum is σ = 4721229504. Its totient is φ = 3791079424.

The previous prime is 4242131407. The next prime is 4242131471. The reversal of 4242131431 is 1341312424.

It is not a de Polignac number, because 4242131431 - 227 = 4107913703 is a prime.

It is a super-2 number, since 2×42421314312 = 35991358155756215522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4242131396 and 4242131405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242131471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13971 + ... + 93163.

It is an arithmetic number, because the mean of its divisors is an integer number (295076844).

Almost surely, 24242131431 is an apocalyptic number.

4242131431 is a deficient number, since it is larger than the sum of its proper divisors (479098073).

4242131431 is a wasteful number, since it uses less digits than its factorization.

4242131431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79370.

The product of its digits is 2304, while the sum is 25.

The square root of 4242131431 is about 65131.6469237497. The cubic root of 4242131431 is about 1618.8056317429.

Adding to 4242131431 its reverse (1341312424), we get a palindrome (5583443855).

The spelling of 4242131431 in words is "four billion, two hundred forty-two million, one hundred thirty-one thousand, four hundred thirty-one".

Divisors: 1 17 23 137 391 2329 3151 53567 79193 1346281 1821439 10849441 30964463 184440497 249537143 4242131431