31321310111311 has 8 divisors (see below), whose sum is σ = 34304832229248. Its totient is φ = 28360476375000.

The previous prime is 31321310111309. The next prime is 31321310111369. The reversal of 31321310111311 is 11311101312313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31321310111311 - 2¹ = 31321310111309 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 (31321310111011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5672092515 + ... + 5672098036.

It is an arithmetic number, because the mean of its divisors is an integer number (4288104028656).

Almost surely, 2^{31321310111311} is an apocalyptic number.

31321310111311 is a deficient number, since it is larger than the sum of its proper divisors (2983522117937).

31321310111311 is a wasteful number, since it uses less digits than its factorization.

31321310111311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11344190813.

The product of its (nonzero) digits is 162, while the sum is 22.

Adding to 31321310111311 its reverse (11311101312313), we get a palindrome (42632411423624).

The spelling of 31321310111311 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred ten million, one hundred eleven thousand, three hundred eleven".