764530231 has 2 divisors, whose sum is σ = 764530232. Its totient is φ = 764530230.

The previous prime is 764530177. The next prime is 764530243. The reversal of 764530231 is 132035467.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 764530231 - 2¹⁷ = 764399159 is a prime.

It is a super-2 number, since 2×764530231² = 1169012948225826722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 764530193 and 764530202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (764534231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382265115 + 382265116.

It is an arithmetic number, because the mean of its divisors is an integer number (382265116).

Almost surely, 2^764530231 is an apocalyptic number.

764530231 is a deficient number, since it is larger than the sum of its proper divisors (1).

764530231 is an equidigital number, since it uses as much as digits as its factorization.

764530231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 764530231 is about 27650.1398007316. The cubic root of 764530231 is about 914.3901820187.

Adding to 764530231 its reverse (132035467), we get a palindrome (896565698).

The spelling of 764530231 in words is "seven hundred sixty-four million, five hundred thirty thousand, two hundred thirty-one".