31103441 has 2 divisors, whose sum is σ = 31103442. Its totient is φ = 31103440.

The previous prime is 31103419. The next prime is 31103533. The reversal of 31103441 is 14430113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16777216 + 14326225 = 4096^2 + 3785^2 .

It is an emirp because it is prime and its reverse (14430113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31103441 - 2¹⁴ = 31087057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31103641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15551720 + 15551721.

It is an arithmetic number, because the mean of its divisors is an integer number (15551721).

Almost surely, 2^31103441 is an apocalyptic number.

It is an amenable number.

31103441 is a deficient number, since it is larger than the sum of its proper divisors (1).

31103441 is an equidigital number, since it uses as much as digits as its factorization.

31103441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 31103441 is about 5577.0459026262. The cubic root of 31103441 is about 314.4870832989.

Adding to 31103441 its reverse (14430113), we get a palindrome (45533554).

The spelling of 31103441 in words is "thirty-one million, one hundred three thousand, four hundred forty-one".