31231300330011 has 4 divisors (see below), whose sum is σ = 41641733773352. Its totient is φ = 20820866886672.

The previous prime is 31231300330007. The next prime is 31231300330037. The reversal of 31231300330011 is 11003300313213.

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

It is not a de Polignac number, because 31231300330011 - 2² = 31231300330007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31231300330011.

It is not an unprimeable number, because it can be changed into a prime (31231300330051) 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, 5205216721666 + ... + 5205216721671.

It is an arithmetic number, because the mean of its divisors is an integer number (10410433443338).

Almost surely, 2^{31231300330011} is an apocalyptic number.

31231300330011 is a deficient number, since it is larger than the sum of its proper divisors (10410433443341).

31231300330011 is a wasteful number, since it uses less digits than its factorization.

31231300330011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10410433443340.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31231300330011 its reverse (11003300313213), we get a palindrome (42234600643224).

The spelling of 31231300330011 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred million, three hundred thirty thousand, eleven".