31132193 has 2 divisors, whose sum is σ = 31132194. Its totient is φ = 31132192.

The previous prime is 31132187. The next prime is 31132201. The reversal of 31132193 is 39123113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30118144 + 1014049 = 5488^2 + 1007^2 .

It is a cyclic number.

It is not a de Polignac number, because 31132193 - 2¹⁶ = 31066657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31132103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15566096 + 15566097.

It is an arithmetic number, because the mean of its divisors is an integer number (15566097).

Almost surely, 2^31132193 is an apocalyptic number.

It is an amenable number.

31132193 is a deficient number, since it is larger than the sum of its proper divisors (1).

31132193 is an equidigital number, since it uses as much as digits as its factorization.

31132193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486, while the sum is 23.

The square root of 31132193 is about 5579.6230159393. The cubic root of 31132193 is about 314.5839573379.

The spelling of 31132193 in words is "thirty-one million, one hundred thirty-two thousand, one hundred ninety-three".