31201133111213 has 8 divisors (see below), whose sum is σ = 33608539270656. Its totient is φ = 28794772522800.

The previous prime is 31201133111173. The next prime is 31201133111231. The reversal of 31201133111213 is 31211133110213.

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 31201133111213 - 2³⁸ = 30926255204269 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 (31201133111513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261330773 + ... + 261450138.

It is an arithmetic number, because the mean of its divisors is an integer number (4201067408832).

Almost surely, 2^{31201133111213} is an apocalyptic number.

It is an amenable number.

31201133111213 is a deficient number, since it is larger than the sum of its proper divisors (2407406159443).

31201133111213 is a wasteful number, since it uses less digits than its factorization.

31201133111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522785515.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 31201133111213 its reverse (31211133110213), we get a palindrome (62412266221426).

It can be divided in two parts, 3120113 and 3111213, that added together give a palindrome (6231326).

The spelling of 31201133111213 in words is "thirty-one trillion, two hundred one billion, one hundred thirty-three million, one hundred eleven thousand, two hundred thirteen".