233231343403021 has 4 divisors (see below), whose sum is σ = 246950834191452. Its totient is φ = 219511852614592.

The previous prime is 233231343402979. The next prime is 233231343403031. The reversal of 233231343403021 is 120304343132332.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82271049574921 + 150960293828100 = 9070339^2 + 12286590^2 .

It is a cyclic number.

It is not a de Polignac number, because 233231343403021 - 2²¹ = 233231341305869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233231343403031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6859745394190 + ... + 6859745394223.

It is an arithmetic number, because the mean of its divisors is an integer number (61737708547863).

Almost surely, 2^{233231343403021} is an apocalyptic number.

It is an amenable number.

233231343403021 is a deficient number, since it is larger than the sum of its proper divisors (13719490788431).

233231343403021 is a wasteful number, since it uses less digits than its factorization.

233231343403021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13719490788430.

The product of its (nonzero) digits is 93312, while the sum is 34.

Adding to 233231343403021 its reverse (120304343132332), we get a palindrome (353535686535353).

The spelling of 233231343403021 in words is "two hundred thirty-three trillion, two hundred thirty-one billion, three hundred forty-three million, four hundred three thousand, twenty-one".