31233043073 has 2 divisors, whose sum is σ = 31233043074. Its totient is φ = 31233043072.

The previous prime is 31233043031. The next prime is 31233043081. The reversal of 31233043073 is 37034033213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30023185984 + 1209857089 = 173272^2 + 34783^2 .

It is an emirp because it is prime and its reverse (37034033213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31233043073 is a prime.

It is not a weakly prime, because it can be changed into another prime (31233043003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616521536 + 15616521537.

It is an arithmetic number, because the mean of its divisors is an integer number (15616521537).

Almost surely, 2^31233043073 is an apocalyptic number.

It is an amenable number.

31233043073 is a deficient number, since it is larger than the sum of its proper divisors (1).

31233043073 is an equidigital number, since it uses as much as digits as its factorization.

31233043073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 29.

Adding to 31233043073 its reverse (37034033213), we get a palindrome (68267076286).

The spelling of 31233043073 in words is "thirty-one billion, two hundred thirty-three million, forty-three thousand, seventy-three".