77030231 has 2 divisors, whose sum is σ = 77030232. Its totient is φ = 77030230.

The previous prime is 77030207. The next prime is 77030269. The reversal of 77030231 is 13203077.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77030231 - 2¹⁰ = 77029207 is a prime.

It is a super-2 number, since 2×77030231² = 11867312975826722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77030197 and 77030206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77030531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38515115 + 38515116.

It is an arithmetic number, because the mean of its divisors is an integer number (38515116).

Almost surely, 2^77030231 is an apocalyptic number.

77030231 is a deficient number, since it is larger than the sum of its proper divisors (1).

77030231 is an equidigital number, since it uses as much as digits as its factorization.

77030231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 77030231 is about 8776.6867894440. The cubic root of 77030231 is about 425.4877555791.

The spelling of 77030231 in words is "seventy-seven million, thirty thousand, two hundred thirty-one".