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1023231 = 311101307
BaseRepresentation
bin11111001110011111111
31220222121110
43321303333
5230220411
633533103
711461116
oct3716377
91828543
101023231
11639850
12414193
1329a981
141c8c7d
151532a6
hexf9cff

1023231 has 16 divisors (see below), whose sum is σ = 1507968. Its totient is φ = 612000.

The previous prime is 1023229. The next prime is 1023257. The reversal of 1023231 is 1323201.

It is a happy number.

It is not a de Polignac number, because 1023231 - 21 = 1023229 is a prime.

It is a super-2 number, since 2×10232312 = 2094003358722, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3180 + ... + 3486.

It is an arithmetic number, because the mean of its divisors is an integer number (94248).

21023231 is an apocalyptic number.

1023231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1023231 is a deficient number, since it is larger than the sum of its proper divisors (484737).

1023231 is a wasteful number, since it uses less digits than its factorization.

1023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422.

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

The square root of 1023231 is about 1011.5488124653. The cubic root of 1023231 is about 100.7684464415.

Adding to 1023231 its reverse (1323201), we get a palindrome (2346432).

It can be divided in two parts, 102 and 3231, that added together give a palindrome (3333).

The spelling of 1023231 in words is "one million, twenty-three thousand, two hundred thirty-one".

Divisors: 1 3 11 33 101 303 307 921 1111 3333 3377 10131 31007 93021 341077 1023231