213112331233 has 8 divisors (see below), whose sum is σ = 220468231080. Its totient is φ = 205756911360.

The previous prime is 213112331227. The next prime is 213112331239. The reversal of 213112331233 is 332133211312.

It is an interprime number because it is at equal distance from previous prime (213112331227) and next prime (213112331239).

It can be written as a sum of positive squares in 4 ways, for example, as 53465344 + 213058865889 = 7312^2 + 461583^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213112331233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213112331198 and 213112331207.

It is not an unprimeable number, because it can be changed into a prime (213112331239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943113 + ... + 1147033.

It is an arithmetic number, because the mean of its divisors is an integer number (27558528885).

Almost surely, 2^213112331233 is an apocalyptic number.

It is an amenable number.

213112331233 is a deficient number, since it is larger than the sum of its proper divisors (7355899847).

213112331233 is a wasteful number, since it uses less digits than its factorization.

213112331233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239987.

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

Adding to 213112331233 its reverse (332133211312), we get a palindrome (545245542545).

The spelling of 213112331233 in words is "two hundred thirteen billion, one hundred twelve million, three hundred thirty-one thousand, two hundred thirty-three".