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881231 = 13531279
BaseRepresentation
bin11010111001001001111
31122202211012
43113021033
5211144411
630515435
710330121
oct3271117
91582735
10881231
1155209a
12365b7b
1324b150
1418d211
1512618b
hexd724f

881231 has 8 divisors (see below), whose sum is σ = 967680. Its totient is φ = 797472.

The previous prime is 881219. The next prime is 881233. The reversal of 881231 is 132188.

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

It is a de Polignac number, because none of the positive numbers 2k-881231 is a prime.

It is a super-2 number, since 2×8812312 = 1553136150722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 881197 and 881206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881233) 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, 50 + ... + 1328.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

2881231 is an apocalyptic number.

881231 is a deficient number, since it is larger than the sum of its proper divisors (86449).

881231 is a wasteful number, since it uses less digits than its factorization.

881231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345.

The product of its digits is 384, while the sum is 23.

The square root of 881231 is about 938.7390478722. The cubic root of 881231 is about 95.8730599420.

The spelling of 881231 in words is "eight hundred eighty-one thousand, two hundred thirty-one".

Divisors: 1 13 53 689 1279 16627 67787 881231