31016109 has 32 divisors (see below), whose sum is σ = 46120320. Its totient is φ = 18450432.

The previous prime is 31016107. The next prime is 31016119. The reversal of 31016109 is 90161013.

It is a happy number.

It is not a de Polignac number, because 31016109 - 2¹ = 31016107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31016107) 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 31 ways as a sum of consecutive naturals, for example, 98937 + ... + 99249.

It is an arithmetic number, because the mean of its divisors is an integer number (1441260).

Almost surely, 2^31016109 is an apocalyptic number.

It is an amenable number.

31016109 is a deficient number, since it is larger than the sum of its proper divisors (15104211).

31016109 is a wasteful number, since it uses less digits than its factorization.

31016109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 31016109 is about 5569.2108058503. The cubic root of 31016109 is about 314.1924692585.

It can be divided in two parts, 31016 and 109, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 31016109 in words is "thirty-one million, sixteen thousand, one hundred nine".