31104113 has 2 divisors, whose sum is σ = 31104114. Its totient is φ = 31104112.

The previous prime is 31104109. The next prime is 31104127. The reversal of 31104113 is 31140113.

It is an a-pointer prime, because the next prime (31104127) can be obtained adding 31104113 to its sum of digits (14).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18515809 + 12588304 = 4303^2 + 3548^2 .

It is a cyclic number.

It is not a de Polignac number, because 31104113 - 2² = 31104109 is a prime.

It is not a weakly prime, because it can be changed into another prime (31104173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15552056 + 15552057.

It is an arithmetic number, because the mean of its divisors is an integer number (15552057).

Almost surely, 2^31104113 is an apocalyptic number.

It is an amenable number.

31104113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31104113 is an equidigital number, since it uses as much as digits as its factorization.

31104113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 31104113 is about 5577.1061492498. The cubic root of 31104113 is about 314.4893481479.

Adding to 31104113 its reverse (31140113), we get a palindrome (62244226).

The spelling of 31104113 in words is "thirty-one million, one hundred four thousand, one hundred thirteen".