31104434 has 4 divisors (see below), whose sum is σ = 46656654. Its totient is φ = 15552216.

The previous prime is 31104431. The next prime is 31104473. The reversal of 31104434 is 43440113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43440113 = 61 ⋅712133.

It can be written as a sum of positive squares in only one way, i.e., 16687225 + 14417209 = 4085^2 + 3797^2 .

It is not an unprimeable number, because it can be changed into a prime (31104431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7776107 + ... + 7776110.

Almost surely, 2^31104434 is an apocalyptic number.

31104434 is a deficient number, since it is larger than the sum of its proper divisors (15552220).

31104434 is a wasteful number, since it uses less digits than its factorization.

31104434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15552219.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 31104434 is about 5577.1349275412. The cubic root of 31104434 is about 314.4904300063.

Adding to 31104434 its reverse (43440113), we get a palindrome (74544547).

The spelling of 31104434 in words is "thirty-one million, one hundred four thousand, four hundred thirty-four".