231213311033 has 8 divisors (see below), whose sum is σ = 233347019400. Its totient is φ = 229079829888.

The previous prime is 231213311029. The next prime is 231213311039. The reversal of 231213311033 is 330113312132.

231213311033 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 272514064 + 230940796969 = 16508^2 + 480563^2 .

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 231213311033 - 2² = 231213311029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231213311039) 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, 2526683 + ... + 2616591.

It is an arithmetic number, because the mean of its divisors is an integer number (29168377425).

Almost surely, 2^231213311033 is an apocalyptic number.

It is an amenable number.

231213311033 is a deficient number, since it is larger than the sum of its proper divisors (2133708367).

231213311033 is a wasteful number, since it uses less digits than its factorization.

231213311033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113611.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 231213311033 its reverse (330113312132), we get a palindrome (561326623165).

The spelling of 231213311033 in words is "two hundred thirty-one billion, two hundred thirteen million, three hundred eleven thousand, thirty-three".