31386107 has 4 divisors (see below), whose sum is σ = 31457400. Its totient is φ = 31314816.

The previous prime is 31386079. The next prime is 31386133. The reversal of 31386107 is 70168313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70168313 = 29 ⋅2419597.

It is a cyclic number.

It is not a de Polignac number, because 31386107 - 2¹⁰ = 31385083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31386107.

It is not an unprimeable number, because it can be changed into a prime (31382107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34982 + ... + 35867.

It is an arithmetic number, because the mean of its divisors is an integer number (7864350).

Almost surely, 2^31386107 is an apocalyptic number.

31386107 is a deficient number, since it is larger than the sum of its proper divisors (71293).

31386107 is an equidigital number, since it uses as much as digits as its factorization.

31386107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71292.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 31386107 is about 5602.3304972127. The cubic root of 31386107 is about 315.4368910419.

The spelling of 31386107 in words is "thirty-one million, three hundred eighty-six thousand, one hundred seven".