31011117 has 8 divisors (see below), whose sum is σ = 42228096. Its totient is φ = 20234112.

The previous prime is 31011091. The next prime is 31011131. The reversal of 31011117 is 71111013.

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

It is not a de Polignac number, because 31011117 - 2¹⁰ = 31010093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31011096 and 31011105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31011187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109828 + ... + 110109.

It is an arithmetic number, because the mean of its divisors is an integer number (5278512).

Almost surely, 2^31011117 is an apocalyptic number.

It is an amenable number.

31011117 is a deficient number, since it is larger than the sum of its proper divisors (11216979).

31011117 is a wasteful number, since it uses less digits than its factorization.

31011117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219987.

The product of its (nonzero) digits is 21, while the sum is 15.

The square root of 31011117 is about 5568.7626094133. The cubic root of 31011117 is about 314.1756120724.

The spelling of 31011117 in words is "thirty-one million, eleven thousand, one hundred seventeen".