31232200213331 has 16 divisors (see below), whose sum is σ = 35693578628064. Its totient is φ = 27072606872064.

The previous prime is 31232200213217. The next prime is 31232200213337. The reversal of 31232200213331 is 13331200223213.

It is a de Polignac number, because none of the positive numbers 2^k-31232200213331 is a prime.

It is a super-2 number, since 2×31232200213331² (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 31232200213331.

It is not an unprimeable number, because it can be changed into a prime (31232200213337) 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, 159407936 + ... + 159603741.

It is an arithmetic number, because the mean of its divisors is an integer number (2230848664254).

Almost surely, 2^{31232200213331} is an apocalyptic number.

31232200213331 is a deficient number, since it is larger than the sum of its proper divisors (4461378414733).

31232200213331 is a wasteful number, since it uses less digits than its factorization.

31232200213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319012150.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 31232200213331 its reverse (13331200223213), we get a palindrome (44563400436544).

The spelling of 31232200213331 in words is "thirty-one trillion, two hundred thirty-two billion, two hundred million, two hundred thirteen thousand, three hundred thirty-one".