Search a number
-
+
1430031 = 31792663
BaseRepresentation
bin101011101001000001111
32200122122010
411131020033
5331230111
650352303
715104121
oct5351017
92618563
101430031
11897449
1258b693
133b0b95
14293211
151d3aa6
hex15d20f

1430031 has 8 divisors (see below), whose sum is σ = 1918080. Its totient is φ = 947672.

The previous prime is 1430027. The next prime is 1430041. The reversal of 1430031 is 1300341.

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 1430031 - 22 = 1430027 is a prime.

It is a super-2 number, since 2×14300312 = 4089977321922, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1429989 and 1430016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430041) 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, 795 + ... + 1868.

It is an arithmetic number, because the mean of its divisors is an integer number (239760).

21430031 is an apocalyptic number.

1430031 is a deficient number, since it is larger than the sum of its proper divisors (488049).

1430031 is a wasteful number, since it uses less digits than its factorization.

1430031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1430031 is about 1195.8390359910. The cubic root of 1430031 is about 112.6631312376.

Adding to 1430031 its reverse (1300341), we get a palindrome (2730372).

The spelling of 1430031 in words is "one million, four hundred thirty thousand, thirty-one".

Divisors: 1 3 179 537 2663 7989 476677 1430031