31104361 has 2 divisors, whose sum is σ = 31104362. Its totient is φ = 31104360.

The previous prime is 31104347. The next prime is 31104389. The reversal of 31104361 is 16340113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30869136 + 235225 = 5556^2 + 485^2 .

It is an emirp because it is prime and its reverse (16340113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31104361 - 2⁵ = 31104329 is a prime.

It is not a weakly prime, because it can be changed into another prime (31104301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15552180 + 15552181.

It is an arithmetic number, because the mean of its divisors is an integer number (15552181).

Almost surely, 2^31104361 is an apocalyptic number.

It is an amenable number.

31104361 is a deficient number, since it is larger than the sum of its proper divisors (1).

31104361 is an equidigital number, since it uses as much as digits as its factorization.

31104361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 31104361 is about 5577.1283829584. The cubic root of 31104361 is about 314.4901839769.

Adding to 31104361 its reverse (16340113), we get a palindrome (47444474).

The spelling of 31104361 in words is "thirty-one million, one hundred four thousand, three hundred sixty-one".