31213131120111 has 8 divisors (see below), whose sum is σ = 41636399457280. Its totient is φ = 20799308431512.

The previous prime is 31213131120091. The next prime is 31213131120121. The reversal of 31213131120111 is 11102113131213.

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

It is not a de Polignac number, because 31213131120111 - 2⁶ = 31213131120047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213131120121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2361404431 + ... + 2361417648.

It is an arithmetic number, because the mean of its divisors is an integer number (5204549932160).

Almost surely, 2^{31213131120111} is an apocalyptic number.

31213131120111 is a deficient number, since it is larger than the sum of its proper divisors (10423268337169).

31213131120111 is a wasteful number, since it uses less digits than its factorization.

31213131120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722824285.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 31213131120111 its reverse (11102113131213), we get a palindrome (42315244251324).

It can be divided in two parts, 3121313 and 1120111, that added together give a palindrome (4241424).

The spelling of 31213131120111 in words is "thirty-one trillion, two hundred thirteen billion, one hundred thirty-one million, one hundred twenty thousand, one hundred eleven".