31213011343433 has 16 divisors (see below), whose sum is σ = 33620358763200. Its totient is φ = 28882138844160.

The previous prime is 31213011343421. The next prime is 31213011343439. The reversal of 31213011343433 is 33434311031213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31213011343433 - 2²⁶ = 31212944234569 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 31213011343433.

It is not an unprimeable number, because it can be changed into a prime (31213011343439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69522713 + ... + 69970233.

It is an arithmetic number, because the mean of its divisors is an integer number (2101272422700).

Almost surely, 2^{31213011343433} is an apocalyptic number.

It is an amenable number.

31213011343433 is a deficient number, since it is larger than the sum of its proper divisors (2407347419767).

31213011343433 is a wasteful number, since it uses less digits than its factorization.

31213011343433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532952.

The product of its (nonzero) digits is 23328, while the sum is 32.

Adding to 31213011343433 its reverse (33434311031213), we get a palindrome (64647322374646).

The spelling of 31213011343433 in words is "thirty-one trillion, two hundred thirteen billion, eleven million, three hundred forty-three thousand, four hundred thirty-three".