31223010313 has 4 divisors (see below), whose sum is σ = 34061465808. Its totient is φ = 28384554820.

The previous prime is 31223010307. The next prime is 31223010331. The reversal of 31223010313 is 31301032213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31223010313 - 2⁵ = 31223010281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31223016313) 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, 1419227731 + ... + 1419227752.

It is an arithmetic number, because the mean of its divisors is an integer number (8515366452).

Almost surely, 2^31223010313 is an apocalyptic number.

It is an amenable number.

31223010313 is a deficient number, since it is larger than the sum of its proper divisors (2838455495).

31223010313 is a wasteful number, since it uses less digits than its factorization.

31223010313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838455494.

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

Adding to 31223010313 its reverse (31301032213), we get a palindrome (62524042526).

The spelling of 31223010313 in words is "thirty-one billion, two hundred twenty-three million, ten thousand, three hundred thirteen".