31311341 has 4 divisors (see below), whose sum is σ = 31324284. Its totient is φ = 31298400.

The previous prime is 31311337. The next prime is 31311367. The reversal of 31311341 is 14311313.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10426441 + 20884900 = 3229^2 + 4570^2 .

It is a cyclic number.

It is not a de Polignac number, because 31311341 - 2² = 31311337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640 + ... + 8081.

It is an arithmetic number, because the mean of its divisors is an integer number (7831071).

Almost surely, 2^31311341 is an apocalyptic number.

It is an amenable number.

31311341 is a deficient number, since it is larger than the sum of its proper divisors (12943).

31311341 is an equidigital number, since it uses as much as digits as its factorization.

31311341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12942.

The product of its digits is 108, while the sum is 17.

The square root of 31311341 is about 5595.6537598390. The cubic root of 31311341 is about 315.1862206189.

Adding to 31311341 its reverse (14311313), we get a palindrome (45622654).

The spelling of 31311341 in words is "thirty-one million, three hundred eleven thousand, three hundred forty-one".