31313113211 has 8 divisors (see below), whose sum is σ = 31396881600. Its totient is φ = 31229380800.

The previous prime is 31313113163. The next prime is 31313113219. The reversal of 31313113211 is 11231131313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31313113211 - 2¹⁴ = 31313096827 is a prime.

It is a super-2 number, since 2×31313113211² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31313113219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3247145 + ... + 3256773.

It is an arithmetic number, because the mean of its divisors is an integer number (3924610200).

Almost surely, 2^31313113211 is an apocalyptic number.

31313113211 is a deficient number, since it is larger than the sum of its proper divisors (83768389).

31313113211 is an equidigital number, since it uses as much as digits as its factorization.

31313113211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17989.

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

Adding to 31313113211 its reverse (11231131313), we get a palindrome (42544244524).

The spelling of 31313113211 in words is "thirty-one billion, three hundred thirteen million, one hundred thirteen thousand, two hundred eleven".