233121331331 has 8 divisors (see below), whose sum is σ = 266916849504. Its totient is φ = 199448930880.

The previous prime is 233121331321. The next prime is 233121331367. The reversal of 233121331331 is 133133121332.

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 233121331331 - 2²² = 233117137027 is a prime.

It is a super-2 number, since 2×233121331331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 233121331331.

It is not an unprimeable number, because it can be changed into a prime (233121331321) 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, 30775370 + ... + 30782943.

It is an arithmetic number, because the mean of its divisors is an integer number (33364606188).

Almost surely, 2^233121331331 is an apocalyptic number.

233121331331 is a deficient number, since it is larger than the sum of its proper divisors (33795518173).

233121331331 is an equidigital number, since it uses as much as digits as its factorization.

233121331331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61558861.

The product of its digits is 2916, while the sum is 26.

Adding to 233121331331 its reverse (133133121332), we get a palindrome (366254452663).

The spelling of 233121331331 in words is "two hundred thirty-three billion, one hundred twenty-one million, three hundred thirty-one thousand, three hundred thirty-one".