845690800231 has 2 divisors, whose sum is σ = 845690800232. Its totient is φ = 845690800230.

The previous prime is 845690800211. The next prime is 845690800289. The reversal of 845690800231 is 132008096548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 845690800231 - 2⁹ = 845690799719 is a prime.

It is a super-2 number, since 2×845690800231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (845690800211) 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, 422845400115 + 422845400116.

It is an arithmetic number, because the mean of its divisors is an integer number (422845400116).

Almost surely, 2^845690800231 is an apocalyptic number.

845690800231 is a deficient number, since it is larger than the sum of its proper divisors (1).

845690800231 is an equidigital number, since it uses as much as digits as its factorization.

845690800231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 46.

Adding to 845690800231 its reverse (132008096548), we get a palindrome (977698896779).

The spelling of 845690800231 in words is "eight hundred forty-five billion, six hundred ninety million, eight hundred thousand, two hundred thirty-one".