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1430310221 = 37103375311
BaseRepresentation
bin101010101000000…
…1100110101001101
310200200101021202122
41111100030311031
510412124411341
6353532302325
750305302434
oct12520146515
93620337678
101430310221
1167441126a
1233b0119a5
1319a431a12
14d7d6211b
158588094b
hex5540cd4d

1430310221 has 8 divisors (see below), whose sum is σ = 1483233024. Its totient is φ = 1378138320.

The previous prime is 1430310173. The next prime is 1430310239. The reversal of 1430310221 is 1220130341.

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

It is a cyclic number.

It is not a de Polignac number, because 1430310221 - 210 = 1430309197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1430310221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430310121) 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, 183845 + ... + 191466.

It is an arithmetic number, because the mean of its divisors is an integer number (185404128).

Almost surely, 21430310221 is an apocalyptic number.

It is an amenable number.

1430310221 is a deficient number, since it is larger than the sum of its proper divisors (52922803).

1430310221 is a wasteful number, since it uses less digits than its factorization.

1430310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375451.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1430310221 is about 37819.4423676500. The cubic root of 1430310221 is about 1126.7046344806.

Adding to 1430310221 its reverse (1220130341), we get a palindrome (2650440562).

The spelling of 1430310221 in words is "one billion, four hundred thirty million, three hundred ten thousand, two hundred twenty-one".

Divisors: 1 37 103 3811 375311 13886507 38657033 1430310221