31311200213032 has 16 divisors (see below), whose sum is σ = 58713245473140. Its totient is φ = 15654334753536.

The previous prime is 31311200213017. The next prime is 31311200213039. The reversal of 31311200213032 is 23031200211313.

It can be written as a sum of positive squares in 2 ways, for example, as 28999237388836 + 2311962824196 = 5385094^2 + 1520514^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31311200212994 and 31311200213012.

It is not an unprimeable number, because it can be changed into a prime (31311200213039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158063953 + ... + 158261920.

Almost surely, 2^{31311200213032} is an apocalyptic number.

It is an amenable number.

31311200213032 is a deficient number, since it is larger than the sum of its proper divisors (27402045260108).

31311200213032 is a wasteful number, since it uses less digits than its factorization.

31311200213032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316338252 (or 316338248 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31311200213032 its reverse (23031200211313), we get a palindrome (54342400424345).

The spelling of 31311200213032 in words is "thirty-one trillion, three hundred eleven billion, two hundred million, two hundred thirteen thousand, thirty-two".