31580093 has 2 divisors, whose sum is σ = 31580094. Its totient is φ = 31580092.

The previous prime is 31580083. The next prime is 31580111. The reversal of 31580093 is 39008513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29997529 + 1582564 = 5477^2 + 1258^2 .

It is an emirp because it is prime and its reverse (39008513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31580093 - 2⁴ = 31580077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31580053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15790046 + 15790047.

It is an arithmetic number, because the mean of its divisors is an integer number (15790047).

Almost surely, 2^31580093 is an apocalyptic number.

It is an amenable number.

31580093 is a deficient number, since it is larger than the sum of its proper divisors (1).

31580093 is an equidigital number, since it uses as much as digits as its factorization.

31580093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 31580093 is about 5619.6168018825. The cubic root of 31580093 is about 316.0854232818.

It can be divided in two parts, 315 and 80093, that added together give a palindrome (80408).

The spelling of 31580093 in words is "thirty-one million, five hundred eighty thousand, ninety-three".