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1230331 is a prime number
BaseRepresentation
bin100101100010111111011
32022111200211
410230113323
5303332311
642211551
713312654
oct4542773
92274624
101230331
11770403
124b3bb7
1334100b
1424052b
15194821
hex12c5fb

1230331 has 2 divisors, whose sum is σ = 1230332. Its totient is φ = 1230330.

The previous prime is 1230329. The next prime is 1230337. The reversal of 1230331 is 1330321.

It is a weak prime.

It is an emirp because it is prime and its reverse (1330321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1230331 - 21 = 1230329 is a prime.

It is a super-2 number, since 2×12303312 = 3027428739122, which contains 22 as substring.

Together with 1230329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1230337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615165 + 615166.

It is an arithmetic number, because the mean of its divisors is an integer number (615166).

21230331 is an apocalyptic number.

1230331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230331 is an equidigital number, since it uses as much as digits as its factorization.

1230331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 1230331 is about 1109.2028669274. The cubic root of 1230331 is about 107.1537371385.

Adding to 1230331 its reverse (1330321), we get a palindrome (2560652).

The spelling of 1230331 in words is "one million, two hundred thirty thousand, three hundred thirty-one".