31104413 has 2 divisors, whose sum is σ = 31104414. Its totient is φ = 31104412.

The previous prime is 31104389. The next prime is 31104419. The reversal of 31104413 is 31440113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28922884 + 2181529 = 5378^2 + 1477^2 .

It is a cyclic number.

It is not a de Polignac number, because 31104413 - 2¹⁶ = 31038877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31104391 and 31104400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31104419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15552206 + 15552207.

It is an arithmetic number, because the mean of its divisors is an integer number (15552207).

Almost surely, 2^31104413 is an apocalyptic number.

It is an amenable number.

31104413 is a deficient number, since it is larger than the sum of its proper divisors (1).

31104413 is an equidigital number, since it uses as much as digits as its factorization.

31104413 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 31104413 is about 5577.1330448538. The cubic root of 31104413 is about 314.4903592307.

Adding to 31104413 its reverse (31440113), we get a palindrome (62544526).

The spelling of 31104413 in words is "thirty-one million, one hundred four thousand, four hundred thirteen".