310131311213 has 4 divisors (see below), whose sum is σ = 310804047708. Its totient is φ = 309458574720.

The previous prime is 310131311209. The next prime is 310131311233. The reversal of 310131311213 is 312113131013.

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 166025281444 + 144106029769 = 407462^2 + 379613^2 .

It is a cyclic number.

It is not a de Polignac number, because 310131311213 - 2² = 310131311209 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 (310131311233) 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, 336367556 + ... + 336368477.

It is an arithmetic number, because the mean of its divisors is an integer number (77701011927).

Almost surely, 2^310131311213 is an apocalyptic number.

It is an amenable number.

310131311213 is a deficient number, since it is larger than the sum of its proper divisors (672736495).

310131311213 is an equidigital number, since it uses as much as digits as its factorization.

310131311213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672736494.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 310131311213 its reverse (312113131013), we get a palindrome (622244442226).

The spelling of 310131311213 in words is "three hundred ten billion, one hundred thirty-one million, three hundred eleven thousand, two hundred thirteen".