231233021033 has 32 divisors (see below), whose sum is σ = 273427055616. Its totient is φ = 191411978688.

The previous prime is 231233021009. The next prime is 231233021051. The reversal of 231233021033 is 330120332132.

It is not a de Polignac number, because 231233021033 - 2¹⁰ = 231233020009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231233021083) 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, 37274510 + ... + 37280712.

It is an arithmetic number, because the mean of its divisors is an integer number (8544595488).

Almost surely, 2^231233021033 is an apocalyptic number.

It is an amenable number.

231233021033 is a deficient number, since it is larger than the sum of its proper divisors (42194034583).

231233021033 is a wasteful number, since it uses less digits than its factorization.

231233021033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7293.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 231233021033 its reverse (330120332132), we get a palindrome (561353353165).

The spelling of 231233021033 in words is "two hundred thirty-one billion, two hundred thirty-three million, twenty-one thousand, thirty-three".