31041097 has 4 divisors (see below), whose sum is σ = 31056516. Its totient is φ = 31025680.

The previous prime is 31041089. The next prime is 31041121. The reversal of 31041097 is 79014013.

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 7070281 + 23970816 = 2659^2 + 4896^2 .

It is a cyclic number.

It is not a de Polignac number, because 31041097 - 2³ = 31041089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31042097) 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 3 ways as a sum of consecutive naturals, for example, 4138 + ... + 8899.

It is an arithmetic number, because the mean of its divisors is an integer number (7764129).

Almost surely, 2^31041097 is an apocalyptic number.

It is an amenable number.

31041097 is a deficient number, since it is larger than the sum of its proper divisors (15419).

31041097 is a wasteful number, since it uses less digits than its factorization.

31041097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15418.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 31041097 is about 5571.4537600163. The cubic root of 31041097 is about 314.2768225643.

The spelling of 31041097 in words is "thirty-one million, forty-one thousand, ninety-seven".