31848457 has 2 divisors, whose sum is σ = 31848458. Its totient is φ = 31848456.

The previous prime is 31848419. The next prime is 31848473. The reversal of 31848457 is 75484813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22429696 + 9418761 = 4736^2 + 3069^2 .

It is a cyclic number.

It is not a de Polignac number, because 31848457 - 2⁷ = 31848329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31848857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15924228 + 15924229.

It is an arithmetic number, because the mean of its divisors is an integer number (15924229).

Almost surely, 2^31848457 is an apocalyptic number.

It is an amenable number.

31848457 is a deficient number, since it is larger than the sum of its proper divisors (1).

31848457 is an equidigital number, since it uses as much as digits as its factorization.

31848457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 40.

The square root of 31848457 is about 5643.4437181565. The cubic root of 31848457 is about 316.9782515174.

The spelling of 31848457 in words is "thirty-one million, eight hundred forty-eight thousand, four hundred fifty-seven".