77327231 has 2 divisors, whose sum is σ = 77327232. Its totient is φ = 77327230.

The previous prime is 77327213. The next prime is 77327249. The reversal of 77327231 is 13272377.

Together with previous prime (77327213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (77327213) and next prime (77327249).

It is a cyclic number.

It is not a de Polignac number, because 77327231 - 2⁶ = 77327167 is a prime.

It is a super-2 number, since 2×77327231² = 11959001308254722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77327291) 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, 38663615 + 38663616.

It is an arithmetic number, because the mean of its divisors is an integer number (38663616).

Almost surely, 2^77327231 is an apocalyptic number.

77327231 is a deficient number, since it is larger than the sum of its proper divisors (1).

77327231 is an equidigital number, since it uses as much as digits as its factorization.

77327231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12348, while the sum is 32.

The square root of 77327231 is about 8793.5903361483. The cubic root of 77327231 is about 426.0338952656.

The spelling of 77327231 in words is "seventy-seven million, three hundred twenty-seven thousand, two hundred thirty-one".