31313003312011 has 4 divisors (see below), whose sum is σ = 31520374195024. Its totient is φ = 31105632429000.

The previous prime is 31313003311999. The next prime is 31313003312021. The reversal of 31313003312011 is 11021330031313.

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 31313003312011 - 2¹⁹ = 31313002787723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31313003312021) 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, 103685441280 + ... + 103685441581.

It is an arithmetic number, because the mean of its divisors is an integer number (7880093548756).

Almost surely, 2^{31313003312011} is an apocalyptic number.

31313003312011 is a deficient number, since it is larger than the sum of its proper divisors (207370883013).

31313003312011 is a wasteful number, since it uses less digits than its factorization.

31313003312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207370883012.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 31313003312011 its reverse (11021330031313), we get a palindrome (42334333343324).

The spelling of 31313003312011 in words is "thirty-one trillion, three hundred thirteen billion, three million, three hundred twelve thousand, eleven".