33031030213213 has 4 divisors (see below), whose sum is σ = 33221961023868. Its totient is φ = 32840099402560.

The previous prime is 33031030213151. The next prime is 33031030213249. The reversal of 33031030213213 is 31231203013033.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12945906233764 + 20085123979449 = 3598042^2 + 4481643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33031030213213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33031030213613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95465405068 + ... + 95465405413.

It is an arithmetic number, because the mean of its divisors is an integer number (8305490255967).

Almost surely, 2^{33031030213213} is an apocalyptic number.

It is an amenable number.

33031030213213 is a deficient number, since it is larger than the sum of its proper divisors (190930810655).

33031030213213 is a wasteful number, since it uses less digits than its factorization.

33031030213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190930810654.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 33031030213213 its reverse (31231203013033), we get a palindrome (64262233226246).

The spelling of 33031030213213 in words is "thirty-three trillion, thirty-one billion, thirty million, two hundred thirteen thousand, two hundred thirteen".