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BaseRepresentation
bin101011101011000010101
32200201001021
411131120111
5331243221
650401141
715110122
oct5353025
92621037
101431061
118981a5
125901b1
133b14a8
14293749
151d4041
hex15d615

1431061 has 8 divisors (see below), whose sum is σ = 1522400. Its totient is φ = 1341360.

The previous prime is 1431047. The next prime is 1431071. The reversal of 1431061 is 1601341.

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

It is a 6-Lehmer number, since φ(1431061) divides (1431061-1)6.

It is a cyclic number.

It is not a de Polignac number, because 1431061 - 25 = 1431029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1726 + ... + 2416.

It is an arithmetic number, because the mean of its divisors is an integer number (190300).

21431061 is an apocalyptic number.

1431061 is the 691-st octagonal number.

It is an amenable number.

1431061 is a deficient number, since it is larger than the sum of its proper divisors (91339).

1431061 is a wasteful number, since it uses less digits than its factorization.

1431061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1431061 is about 1196.2696184389. The cubic root of 1431061 is about 112.6901738158.

The spelling of 1431061 in words is "one million, four hundred thirty-one thousand, sixty-one".

Divisors: 1 19 109 691 2071 13129 75319 1431061