233232331681 has 2 divisors, whose sum is σ = 233232331682. Its totient is φ = 233232331680.

The previous prime is 233232331649. The next prime is 233232331729. The reversal of 233232331681 is 186133232332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218314152081 + 14918179600 = 467241^2 + 122140^2 .

It is a cyclic number.

It is not a de Polignac number, because 233232331681 - 2⁵ = 233232331649 is a prime.

It is a super-2 number, since 2×233232331681² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 233232331681.

It is not a weakly prime, because it can be changed into another prime (233232331621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116616165840 + 116616165841.

It is an arithmetic number, because the mean of its divisors is an integer number (116616165841).

Almost surely, 2^233232331681 is an apocalyptic number.

It is an amenable number.

233232331681 is a deficient number, since it is larger than the sum of its proper divisors (1).

233232331681 is an equidigital number, since it uses as much as digits as its factorization.

233232331681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 37.

The spelling of 233232331681 in words is "two hundred thirty-three billion, two hundred thirty-two million, three hundred thirty-one thousand, six hundred eighty-one".