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11427031 = 711148403
BaseRepresentation
bin101011100101…
…110011010111
3210111112221101
4223211303113
510411131111
61044530531
7166061650
oct53456327
923445841
1011427031
1164a5330
1239b0a47
1324a1275
141736527
15100abc1
hexae5cd7

11427031 has 8 divisors (see below), whose sum is σ = 14246784. Its totient is φ = 8904120.

The previous prime is 11427029. The next prime is 11427041. The reversal of 11427031 is 13072411.

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 11427031 - 21 = 11427029 is a prime.

It is a super-2 number, since 2×114270312 = 261154074949922, 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 (11427011) 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, 74125 + ... + 74278.

It is an arithmetic number, because the mean of its divisors is an integer number (1780848).

Almost surely, 211427031 is an apocalyptic number.

11427031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11427031 is a deficient number, since it is larger than the sum of its proper divisors (2819753).

11427031 is a wasteful number, since it uses less digits than its factorization.

11427031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148421.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 11427031 is about 3380.3891787781. The cubic root of 11427031 is about 225.2394553582.

Adding to 11427031 its reverse (13072411), we get a palindrome (24499442).

The spelling of 11427031 in words is "eleven million, four hundred twenty-seven thousand, thirty-one".

Divisors: 1 7 11 77 148403 1038821 1632433 11427031