31313311000211 has 4 divisors (see below), whose sum is σ = 32674759304592. Its totient is φ = 29951862695832.

The previous prime is 31313311000177. The next prime is 31313311000241. The reversal of 31313311000211 is 11200011331313.

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 31313311000211 - 2³⁰ = 31312237258387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31313311000241) 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, 680724152156 + ... + 680724152201.

It is an arithmetic number, because the mean of its divisors is an integer number (8168689826148).

Almost surely, 2^{31313311000211} is an apocalyptic number.

31313311000211 is a deficient number, since it is larger than the sum of its proper divisors (1361448304381).

31313311000211 is a wasteful number, since it uses less digits than its factorization.

31313311000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361448304380.

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

Adding to 31313311000211 its reverse (11200011331313), we get a palindrome (42513322331524).

The spelling of 31313311000211 in words is "thirty-one trillion, three hundred thirteen billion, three hundred eleven million, two hundred eleven", and thus it is an aban number.