31361216313 has 16 divisors (see below), whose sum is σ = 48325472640. Its totient is φ = 17719337856.

The previous prime is 31361216269. The next prime is 31361216351.

31361216313 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31361216313 - 2⁹ = 31361215801 is a prime.

It is a super-4 number, since 4×31361216313⁴ (a number of 43 digits) contains 4444 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31361216713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8387970 + ... + 8391707.

It is an arithmetic number, because the mean of its divisors is an integer number (3020342040).

Almost surely, 2^31361216313 is an apocalyptic number.

It is an amenable number.

31361216313 is a deficient number, since it is larger than the sum of its proper divisors (16964256327).

31361216313 is a wasteful number, since it uses less digits than its factorization.

31361216313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16779776.

The product of its digits is 5832, while the sum is 30.

The spelling of 31361216313 in words is "thirty-one billion, three hundred sixty-one million, two hundred sixteen thousand, three hundred thirteen".