3131311242211 has 4 divisors (see below), whose sum is σ = 3131317011024. Its totient is φ = 3131305473400.

The previous prime is 3131311242187. The next prime is 3131311242217. The reversal of 3131311242211 is 1122421131313.

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 3131311242211 - 2²⁹ = 3130774371299 is a prime.

It is a super-2 number, since 2×3131311242211² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131311242217) 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, 1974535 + ... + 3187696.

It is an arithmetic number, because the mean of its divisors is an integer number (782829252756).

Almost surely, 2^{3131311242211} is an apocalyptic number.

3131311242211 is a deficient number, since it is larger than the sum of its proper divisors (5768813).

3131311242211 is an equidigital number, since it uses as much as digits as its factorization.

3131311242211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5768812.

The product of its digits is 864, while the sum is 25.

Adding to 3131311242211 its reverse (1122421131313), we get a palindrome (4253732373524).

The spelling of 3131311242211 in words is "three trillion, one hundred thirty-one billion, three hundred eleven million, two hundred forty-two thousand, two hundred eleven".