31441229 has 2 divisors, whose sum is σ = 31441230. Its totient is φ = 31441228.

The previous prime is 31441217. The next prime is 31441237. The reversal of 31441229 is 92214413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20702500 + 10738729 = 4550^2 + 3277^2 .

It is a cyclic number.

It is not a de Polignac number, because 31441229 - 2²⁰ = 30392653 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31441198 and 31441207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31441129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15720614 + 15720615.

It is an arithmetic number, because the mean of its divisors is an integer number (15720615).

Almost surely, 2^31441229 is an apocalyptic number.

It is an amenable number.

31441229 is a deficient number, since it is larger than the sum of its proper divisors (1).

31441229 is an equidigital number, since it uses as much as digits as its factorization.

31441229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 31441229 is about 5607.2478989251. The cubic root of 31441229 is about 315.6214455568.

The spelling of 31441229 in words is "thirty-one million, four hundred forty-one thousand, two hundred twenty-nine".