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1430420231 = 47101929867
BaseRepresentation
bin101010101000010…
…0111101100000111
310200200120212200002
41111100213230013
510412141421411
6353534511515
750306241242
oct12520475407
93620525602
101430420231
11674486989
1233b06559b
1319a46cb06
14d7d90259
15858a333b
hex55427b07

1430420231 has 8 divisors (see below), whose sum is σ = 1462337280. Its totient is φ = 1398565048.

The previous prime is 1430420221. The next prime is 1430420237. The reversal of 1430420231 is 1320240341.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1430420231 is a prime.

It is a super-2 number, since 2×14304202312 = 4092204074508186722, 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 (1430420237) 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, 32960 + ... + 62826.

It is an arithmetic number, because the mean of its divisors is an integer number (182792160).

Almost surely, 21430420231 is an apocalyptic number.

1430420231 is a deficient number, since it is larger than the sum of its proper divisors (31917049).

1430420231 is a wasteful number, since it uses less digits than its factorization.

1430420231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30933.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1430420231 is about 37820.8967503416. The cubic root of 1430420231 is about 1126.7335199623.

Adding to 1430420231 its reverse (1320240341), we get a palindrome (2750660572).

The spelling of 1430420231 in words is "one billion, four hundred thirty million, four hundred twenty thousand, two hundred thirty-one".

Divisors: 1 47 1019 29867 47893 1403749 30434473 1430420231