231065651 has 2 divisors, whose sum is σ = 231065652. Its totient is φ = 231065650.

The previous prime is 231065633. The next prime is 231065657. The reversal of 231065651 is 156560132.

231065651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231065651 - 2⁶ = 231065587 is a prime.

It is not a weakly prime, because it can be changed into another prime (231065657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115532825 + 115532826.

It is an arithmetic number, because the mean of its divisors is an integer number (115532826).

Almost surely, 2^231065651 is an apocalyptic number.

231065651 is a deficient number, since it is larger than the sum of its proper divisors (1).

231065651 is an equidigital number, since it uses as much as digits as its factorization.

231065651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 231065651 is about 15200.8437594760. The cubic root of 231065651 is about 613.6373655758.

The spelling of 231065651 in words is "two hundred thirty-one million, sixty-five thousand, six hundred fifty-one".