31197082 has 16 divisors (see below), whose sum is σ = 54012672. Its totient is φ = 13237200.

The previous prime is 31197079. The next prime is 31197083. The reversal of 31197082 is 28079113.

It is not an unprimeable number, because it can be changed into a prime (31197083) 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, 9618 + ... + 12445.

It is an arithmetic number, because the mean of its divisors is an integer number (3375792).

Almost surely, 2^31197082 is an apocalyptic number.

31197082 is a deficient number, since it is larger than the sum of its proper divisors (22815590).

31197082 is a wasteful number, since it uses less digits than its factorization.

31197082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22173.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 31197082 is about 5585.4348084997. The cubic root of 31197082 is about 314.8023686832.

It can be divided in two parts, 3119 and 7082, that added together give a palindrome (10201).

The spelling of 31197082 in words is "thirty-one million, one hundred ninety-seven thousand, eighty-two".