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1231339 is a prime number
BaseRepresentation
bin100101100100111101011
32022120002011
410230213223
5303400324
642220351
713315624
oct4544753
92276064
101231339
1177113a
124b46b7
13341605
14240a4b
15194c94
hex12c9eb

1231339 has 2 divisors, whose sum is σ = 1231340. Its totient is φ = 1231338.

The previous prime is 1231337. The next prime is 1231357. The reversal of 1231339 is 9331321.

It is a weak prime.

It is an emirp because it is prime and its reverse (9331321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231339 - 21 = 1231337 is a prime.

Together with 1231337, it forms a pair of twin primes.

1231339 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1231337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615669 + 615670.

It is an arithmetic number, because the mean of its divisors is an integer number (615670).

21231339 is an apocalyptic number.

1231339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231339 is an equidigital number, since it uses as much as digits as its factorization.

1231339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486, while the sum is 22.

The square root of 1231339 is about 1109.6571542598. The cubic root of 1231339 is about 107.1829925402.

The spelling of 1231339 in words is "one million, two hundred thirty-one thousand, three hundred thirty-nine".