33231440403121 has 4 divisors (see below), whose sum is σ = 33232171115044. Its totient is φ = 33230709691200.

The previous prime is 33231440403089. The next prime is 33231440403127. The reversal of 33231440403121 is 12130404413233.

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 10684327778721 + 22547112624400 = 3268689^2 + 4748380^2 .

It is a cyclic number.

It is not a de Polignac number, because 33231440403121 - 2⁵ = 33231440403089 is a prime.

It is a super-2 number, since 2×33231440403121² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33231440403127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365287740 + ... + 365378701.

It is an arithmetic number, because the mean of its divisors is an integer number (8308042778761).

Almost surely, 2^{33231440403121} is an apocalyptic number.

It is an amenable number.

33231440403121 is a deficient number, since it is larger than the sum of its proper divisors (730711923).

33231440403121 is an equidigital number, since it uses as much as digits as its factorization.

33231440403121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730711922.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 33231440403121 its reverse (12130404413233), we get a palindrome (45361844816354).

The spelling of 33231440403121 in words is "thirty-three trillion, two hundred thirty-one billion, four hundred forty million, four hundred three thousand, one hundred twenty-one".