31434313 has 4 divisors (see below), whose sum is σ = 31496580. Its totient is φ = 31372048.

The previous prime is 31434287. The next prime is 31434329. The reversal of 31434313 is 31343413.

It is a happy number.

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 14722569 + 16711744 = 3837^2 + 4088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31434313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31434373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30370 + ... + 31387.

It is an arithmetic number, because the mean of its divisors is an integer number (7874145).

Almost surely, 2^31434313 is an apocalyptic number.

It is an amenable number.

31434313 is a deficient number, since it is larger than the sum of its proper divisors (62267).

31434313 is an equidigital number, since it uses as much as digits as its factorization.

31434313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62266.

The product of its digits is 1296, while the sum is 22.

The square root of 31434313 is about 5606.6311631853. The cubic root of 31434313 is about 315.5983018688.

Adding to 31434313 its reverse (31343413), we get a palindrome (62777726).

The spelling of 31434313 in words is "thirty-one million, four hundred thirty-four thousand, three hundred thirteen".