2331320081 has 2 divisors, whose sum is σ = 2331320082. Its totient is φ = 2331320080.

The previous prime is 2331320059. The next prime is 2331320113. The reversal of 2331320081 is 1800231332.

2331320081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1757286400 + 574033681 = 41920^2 + 23959^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331320081 - 2²² = 2327125777 is a prime.

It is a super-2 number, since 2×2331320081² = 10870106640147693122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2331320011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165660040 + 1165660041.

It is an arithmetic number, because the mean of its divisors is an integer number (1165660041).

Almost surely, 2^2331320081 is an apocalyptic number.

It is an amenable number.

2331320081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331320081 is an equidigital number, since it uses as much as digits as its factorization.

2331320081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2331320081 is about 48283.7455154424. The cubic root of 2331320081 is about 1325.9708239992.

The spelling of 2331320081 in words is "two billion, three hundred thirty-one million, three hundred twenty thousand, eighty-one".