31112202231201 has 128 divisors (see below), whose sum is σ = 53739209051136. Its totient is φ = 15570751979520.

The previous prime is 31112202231199. The next prime is 31112202231293. The reversal of 31112202231201 is 10213220221113.

It is not a de Polignac number, because 31112202231201 - 2¹ = 31112202231199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (31112202251201) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 976114401 + ... + 976146273.

It is an arithmetic number, because the mean of its divisors is an integer number (419837570712).

Almost surely, 2^{31112202231201} is an apocalyptic number.

It is an amenable number.

31112202231201 is a deficient number, since it is larger than the sum of its proper divisors (22627006819935).

31112202231201 is a wasteful number, since it uses less digits than its factorization.

31112202231201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34331.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31112202231201 its reverse (10213220221113), we get a palindrome (41325422452314).

It can be divided in two parts, 31112202 and 231201, that added together give a triangular number (31343403 = T₇₉₁₇).

The spelling of 31112202231201 in words is "thirty-one trillion, one hundred twelve billion, two hundred two million, two hundred thirty-one thousand, two hundred one".