233401331 has 2 divisors, whose sum is σ = 233401332. Its totient is φ = 233401330.

The previous prime is 233401327. The next prime is 233401351. The reversal of 233401331 is 133104332.

It is an a-pointer prime, because the next prime (233401351) can be obtained adding 233401331 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 233401331 - 2² = 233401327 is a prime.

It is a super-2 number, since 2×233401331² = 108952362625143122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (233401321) 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 as a sum of consecutive naturals, namely, 116700665 + 116700666.

It is an arithmetic number, because the mean of its divisors is an integer number (116700666).

Almost surely, 2^233401331 is an apocalyptic number.

233401331 is a deficient number, since it is larger than the sum of its proper divisors (1).

233401331 is an equidigital number, since it uses as much as digits as its factorization.

233401331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 233401331 is about 15277.4779004913. The cubic root of 233401331 is about 615.6980471475.

Adding to 233401331 its reverse (133104332), we get a palindrome (366505663).

The spelling of 233401331 in words is "two hundred thirty-three million, four hundred one thousand, three hundred thirty-one".