31340005 has 8 divisors (see below), whose sum is σ = 37653624. Its totient is φ = 25041600.

The previous prime is 31340003. The next prime is 31340009. The reversal of 31340005 is 50004313.

It can be written as a sum of positive squares in 4 ways, for example, as 11546404 + 19793601 = 3398^2 + 4449^2 .

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

It is not a de Polignac number, because 31340005 - 2¹ = 31340003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31340003) 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, 1375 + ... + 8035.

It is an arithmetic number, because the mean of its divisors is an integer number (4706703).

Almost surely, 2^31340005 is an apocalyptic number.

It is an amenable number.

31340005 is a deficient number, since it is larger than the sum of its proper divisors (6313619).

31340005 is an equidigital number, since it uses as much as digits as its factorization.

31340005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7607.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 31340005 is about 5598.2144474823. The cubic root of 31340005 is about 315.2823704702.

Adding to 31340005 its reverse (50004313), we get a palindrome (81344318).

The spelling of 31340005 in words is "thirty-one million, three hundred forty thousand, five".