31321011303311 has 4 divisors (see below), whose sum is σ = 31411273584072. Its totient is φ = 31230749022552.

The previous prime is 31321011303271. The next prime is 31321011303347. The reversal of 31321011303311 is 11330311012313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31321011303311 - 2¹⁸ = 31321011041167 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 (31321011303511) 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, 45131139860 + ... + 45131140553.

It is an arithmetic number, because the mean of its divisors is an integer number (7852818396018).

Almost surely, 2^{31321011303311} is an apocalyptic number.

31321011303311 is a deficient number, since it is larger than the sum of its proper divisors (90262280761).

31321011303311 is an equidigital number, since it uses as much as digits as its factorization.

31321011303311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90262280760.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 31321011303311 its reverse (11330311012313), we get a palindrome (42651322315624).

The spelling of 31321011303311 in words is "thirty-one trillion, three hundred twenty-one billion, eleven million, three hundred three thousand, three hundred eleven".