31201044212231 has 16 divisors (see below), whose sum is σ = 31417865942400. Its totient is φ = 30984457540608.

The previous prime is 31201044212197. The next prime is 31201044212257. The reversal of 31201044212231 is 13221244010213.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31201044212231 is a prime.

It is a super-2 number, since 2×31201044212231² (a number of 28 digits) contains 22 as substring.

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 31201044212231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31201044212431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3071266130 + ... + 3071276288.

It is an arithmetic number, because the mean of its divisors is an integer number (1963616621400).

Almost surely, 2^{31201044212231} is an apocalyptic number.

31201044212231 is a deficient number, since it is larger than the sum of its proper divisors (216821730169).

31201044212231 is a wasteful number, since it uses less digits than its factorization.

31201044212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19658.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 31201044212231 its reverse (13221244010213), we get a palindrome (44422288222444).

The spelling of 31201044212231 in words is "thirty-one trillion, two hundred one billion, forty-four million, two hundred twelve thousand, two hundred thirty-one".