31068497 has 4 divisors (see below), whose sum is σ = 31085220. Its totient is φ = 31051776.

The previous prime is 31068491. The next prime is 31068511. The reversal of 31068497 is 79486013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4946176 + 26122321 = 2224^2 + 5111^2 .

It is a cyclic number.

It is not a de Polignac number, because 31068497 - 2⁴ = 31068481 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 31068497.

It is not an unprimeable number, because it can be changed into a prime (31068491) 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 3 ways as a sum of consecutive naturals, for example, 5168 + ... + 9425.

It is an arithmetic number, because the mean of its divisors is an integer number (7771305).

Almost surely, 2^31068497 is an apocalyptic number.

It is an amenable number.

31068497 is a deficient number, since it is larger than the sum of its proper divisors (16723).

31068497 is a wasteful number, since it uses less digits than its factorization.

31068497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16722.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 31068497 is about 5573.9121808654. The cubic root of 31068497 is about 314.3692661666.

The spelling of 31068497 in words is "thirty-one million, sixty-eight thousand, four hundred ninety-seven".