31212302213 has 8 divisors (see below), whose sum is σ = 31522372128. Its totient is φ = 30902572624.

The previous prime is 31212302201. The next prime is 31212302249. The reversal of 31212302213 is 31220321213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31212302213 - 2¹⁶ = 31212236677 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 (31212302293) 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 7 ways as a sum of consecutive naturals, for example, 101270 + ... + 269592.

It is an arithmetic number, because the mean of its divisors is an integer number (3940296516).

Almost surely, 2^31212302213 is an apocalyptic number.

It is an amenable number.

31212302213 is a deficient number, since it is larger than the sum of its proper divisors (310069915).

31212302213 is a wasteful number, since it uses less digits than its factorization.

31212302213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170163.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31212302213 its reverse (31220321213), we get a palindrome (62432623426).

The spelling of 31212302213 in words is "thirty-one billion, two hundred twelve million, three hundred two thousand, two hundred thirteen".