31340165 has 8 divisors (see below), whose sum is σ = 37698048. Its totient is φ = 25012240.

The previous prime is 31340143. The next prime is 31340167. The reversal of 31340165 is 56104313.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31340165 - 2¹⁴ = 31323781 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 31340165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31340167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5117 + ... + 9426.

It is an arithmetic number, because the mean of its divisors is an integer number (4712256).

Almost surely, 2^31340165 is an apocalyptic number.

It is an amenable number.

31340165 is a deficient number, since it is larger than the sum of its proper divisors (6357883).

31340165 is a wasteful number, since it uses less digits than its factorization.

31340165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14979.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 31340165 is about 5598.2287377348. The cubic root of 31340165 is about 315.2829070059.

Adding to 31340165 its reverse (56104313), we get a palindrome (87444478).

The spelling of 31340165 in words is "thirty-one million, three hundred forty thousand, one hundred sixty-five".