31341313 has 4 divisors (see below), whose sum is σ = 31352580. Its totient is φ = 31330048.

The previous prime is 31341301. The next prime is 31341361. The reversal of 31341313 is 31314313.

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 25230529 + 6110784 = 5023^2 + 2472^2 .

It is a cyclic number.

It is not a de Polignac number, because 31341313 - 2²¹ = 29244161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31341113) 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, 1881 + ... + 8137.

It is an arithmetic number, because the mean of its divisors is an integer number (7838145).

Almost surely, 2^31341313 is an apocalyptic number.

It is an amenable number.

31341313 is a deficient number, since it is larger than the sum of its proper divisors (11267).

31341313 is an equidigital number, since it uses as much as digits as its factorization.

31341313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11266.

The product of its digits is 324, while the sum is 19.

The square root of 31341313 is about 5598.3312692266. The cubic root of 31341313 is about 315.2867565959.

Adding to 31341313 its reverse (31314313), we get a palindrome (62655626).

Subtracting from 31341313 its reverse (31314313), we obtain a cube (27000 = 30³).

The spelling of 31341313 in words is "thirty-one million, three hundred forty-one thousand, three hundred thirteen".