77326231 has 2 divisors, whose sum is σ = 77326232. Its totient is φ = 77326230.

The previous prime is 77326229. The next prime is 77326247. The reversal of 77326231 is 13262377.

It is a weak prime.

It is an emirp because it is prime and its reverse (13262377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77326231 - 2¹ = 77326229 is a prime.

It is a super-2 number, since 2×77326231² = 11958692001330722, which contains 22 as substring.

Together with 77326229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 77326193 and 77326202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77326211) 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, 38663115 + 38663116.

It is an arithmetic number, because the mean of its divisors is an integer number (38663116).

Almost surely, 2^77326231 is an apocalyptic number.

77326231 is a deficient number, since it is larger than the sum of its proper divisors (1).

77326231 is an equidigital number, since it uses as much as digits as its factorization.

77326231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 31.

The square root of 77326231 is about 8793.5334763677. The cubic root of 77326231 is about 426.0320587598.

The spelling of 77326231 in words is "seventy-seven million, three hundred twenty-six thousand, two hundred thirty-one".