31109084 has 6 divisors (see below), whose sum is σ = 54440904. Its totient is φ = 15554540.

The previous prime is 31109077. The next prime is 31109101. The reversal of 31109084 is 48090113.

31109084 is nontrivially palindromic in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3888632 + ... + 3888639.

It is an arithmetic number, because the mean of its divisors is an integer number (9073484).

Almost surely, 2^31109084 is an apocalyptic number.

It is an amenable number.

31109084 is a deficient number, since it is larger than the sum of its proper divisors (23331820).

31109084 is a wasteful number, since it uses less digits than its factorization.

31109084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7777275 (or 7777273 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 31109084 is about 5577.5517926775. The cubic root of 31109084 is about 314.5061009514.

Adding to 31109084 its reverse (48090113), we get a palindrome (79199197).

The spelling of 31109084 in words is "thirty-one million, one hundred nine thousand, eighty-four".