31103009 has 8 divisors (see below), whose sum is σ = 35703360. Its totient is φ = 26541936.

The previous prime is 31102999. The next prime is 31103021. The reversal of 31103009 is 90030113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31103009 - 2¹⁶ = 31037473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31103029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8099 + ... + 11304.

It is an arithmetic number, because the mean of its divisors is an integer number (4462920).

Almost surely, 2^31103009 is an apocalyptic number.

It is an amenable number.

31103009 is a deficient number, since it is larger than the sum of its proper divisors (4600351).

31103009 is a wasteful number, since it uses less digits than its factorization.

31103009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19639.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 31103009 is about 5577.0071723103. The cubic root of 31103009 is about 314.4856273072.

The spelling of 31103009 in words is "thirty-one million, one hundred three thousand, nine".