31382693 has 2 divisors, whose sum is σ = 31382694. Its totient is φ = 31382692.

The previous prime is 31382677. The next prime is 31382711. The reversal of 31382693 is 39628313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31382404 + 289 = 5602^2 + 17^2 .

It is a cyclic number.

It is not a de Polignac number, because 31382693 - 2⁴ = 31382677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31382653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15691346 + 15691347.

It is an arithmetic number, because the mean of its divisors is an integer number (15691347).

Almost surely, 2^31382693 is an apocalyptic number.

It is an amenable number.

31382693 is a deficient number, since it is larger than the sum of its proper divisors (1).

31382693 is an equidigital number, since it uses as much as digits as its factorization.

31382693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 31382693 is about 5602.0257942998. The cubic root of 31382693 is about 315.4254534909.

The spelling of 31382693 in words is "thirty-one million, three hundred eighty-two thousand, six hundred ninety-three".