31231201212001 has 8 divisors (see below), whose sum is σ = 36181743870464. Its totient is φ = 26402894174880.

The previous prime is 31231201211939. The next prime is 31231201212011. The reversal of 31231201212001 is 10021210213213.

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 31231201212001 - 2¹⁷ = 31231201080929 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 31231201212001.

It is not an unprimeable number, because it can be changed into a prime (31231201212011) 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, 30558904785 + ... + 30558905806.

It is an arithmetic number, because the mean of its divisors is an integer number (4522717983808).

Almost surely, 2^{31231201212001} is an apocalyptic number.

It is an amenable number.

31231201212001 is a deficient number, since it is larger than the sum of its proper divisors (4950542658463).

31231201212001 is an equidigital number, since it uses as much as digits as its factorization.

31231201212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61117810671.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31231201212001 its reverse (10021210213213), we get a palindrome (41252411425214).

The spelling of 31231201212001 in words is "thirty-one trillion, two hundred thirty-one billion, two hundred one million, two hundred twelve thousand, one".