1231073 has 2 divisors, whose sum is σ = 1231074. Its totient is φ = 1231072.

The previous prime is 1231063. The next prime is 1231091. The reversal of 1231073 is 3701321.

1231073 is nontrivially palindromic in base 4.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 984064 + 247009 = 992^2 + 497^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231073 - 2¹² = 1226977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615536 + 615537.

It is an arithmetic number, because the mean of its divisors is an integer number (615537).

2^1231073 is an apocalyptic number.

It is an amenable number.

1231073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231073 is an equidigital number, since it uses as much as digits as its factorization.

1231073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 1231073 is about 1109.5372909461. The cubic root of 1231073 is about 107.1752739160.

Adding to 1231073 its reverse (3701321), we get a palindrome (4932394).

The spelling of 1231073 in words is "one million, two hundred thirty-one thousand, seventy-three".