213121032313 has 8 divisors (see below), whose sum is σ = 243644562432. Its totient is φ = 182616919296.

The previous prime is 213121032307. The next prime is 213121032317. The reversal of 213121032313 is 313230121312.

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

It is not a de Polignac number, because 213121032313 - 2¹³ = 213121024121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213121032317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4830745 + ... + 4874662.

It is an arithmetic number, because the mean of its divisors is an integer number (30455570304).

Almost surely, 2^213121032313 is an apocalyptic number.

It is an amenable number.

213121032313 is a deficient number, since it is larger than the sum of its proper divisors (30523530119).

213121032313 is an equidigital number, since it uses as much as digits as its factorization.

213121032313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9708551.

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

Adding to 213121032313 its reverse (313230121312), we get a palindrome (526351153625).

The spelling of 213121032313 in words is "two hundred thirteen billion, one hundred twenty-one million, thirty-two thousand, three hundred thirteen".