31825841 has 2 divisors, whose sum is σ = 31825842. Its totient is φ = 31825840.

The previous prime is 31825837. The next prime is 31825903. The reversal of 31825841 is 14852813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31192225 + 633616 = 5585^2 + 796^2 .

It is a cyclic number.

It is not a de Polignac number, because 31825841 - 2² = 31825837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31825798 and 31825807.

It is not a weakly prime, because it can be changed into another prime (31825831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15912920 + 15912921.

It is an arithmetic number, because the mean of its divisors is an integer number (15912921).

Almost surely, 2^31825841 is an apocalyptic number.

It is an amenable number.

31825841 is a deficient number, since it is larger than the sum of its proper divisors (1).

31825841 is an equidigital number, since it uses as much as digits as its factorization.

31825841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 32.

The square root of 31825841 is about 5641.4396212314. The cubic root of 31825841 is about 316.9032036358.

The spelling of 31825841 in words is "thirty-one million, eight hundred twenty-five thousand, eight hundred forty-one".