31109049 has 8 divisors (see below), whose sum is σ = 46087520. Its totient is φ = 20739348.

The previous prime is 31109047. The next prime is 31109063. The reversal of 31109049 is 94090113.

It is not a de Polignac number, because 31109049 - 2¹ = 31109047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1152187 = 31109049 / (3 + 1 + 1 + 0 + 9 + 0 + 4 + 9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31109047) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 576067 + ... + 576120.

It is an arithmetic number, because the mean of its divisors is an integer number (5760940).

Almost surely, 2^31109049 is an apocalyptic number.

It is an amenable number.

31109049 is a deficient number, since it is larger than the sum of its proper divisors (14978471).

31109049 is a wasteful number, since it uses less digits than its factorization.

31109049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152196 (or 1152190 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 31109049 is about 5577.5486550993. The cubic root of 31109049 is about 314.5059830039.

The spelling of 31109049 in words is "thirty-one million, one hundred nine thousand, forty-nine".