31103417 has 2 divisors, whose sum is σ = 31103418. Its totient is φ = 31103416.

The previous prime is 31103381. The next prime is 31103419. The reversal of 31103417 is 71430113.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29041321 + 2062096 = 5389^2 + 1436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31103417 is a prime.

Together with 31103419, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31103419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15551708 + 15551709.

It is an arithmetic number, because the mean of its divisors is an integer number (15551709).

Almost surely, 2^31103417 is an apocalyptic number.

It is an amenable number.

31103417 is a deficient number, since it is larger than the sum of its proper divisors (1).

31103417 is an equidigital number, since it uses as much as digits as its factorization.

31103417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 31103417 is about 5577.0437509491. The cubic root of 31103417 is about 314.4870024108.

The spelling of 31103417 in words is "thirty-one million, one hundred three thousand, four hundred seventeen".