213332231311 has 32 divisors (see below), whose sum is σ = 234117941760. Its totient is φ = 193516646400.

The previous prime is 213332231291. The next prime is 213332231351. The reversal of 213332231311 is 113132233312.

It is a cyclic number.

It is not a de Polignac number, because 213332231311 - 2¹⁵ = 213332198543 is a prime.

It is a super-2 number, since 2×213332231311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213332231351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263698275 + ... + 263699083.

It is an arithmetic number, because the mean of its divisors is an integer number (7316185680).

Almost surely, 2^213332231311 is an apocalyptic number.

213332231311 is a deficient number, since it is larger than the sum of its proper divisors (20785710449).

213332231311 is a wasteful number, since it uses less digits than its factorization.

213332231311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275.

The product of its digits is 1944, while the sum is 25.

Adding to 213332231311 its reverse (113132233312), we get a palindrome (326464464623).

The spelling of 213332231311 in words is "two hundred thirteen billion, three hundred thirty-two million, two hundred thirty-one thousand, three hundred eleven".