677043431 has 2 divisors, whose sum is σ = 677043432. Its totient is φ = 677043430.

The previous prime is 677043407. The next prime is 677043443. The reversal of 677043431 is 134340776.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677043431 is a prime.

It is a super-2 number, since 2×677043431² = 916775614920503522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 677043391 and 677043400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677043481) 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, 338521715 + 338521716.

It is an arithmetic number, because the mean of its divisors is an integer number (338521716).

Almost surely, 2^677043431 is an apocalyptic number.

677043431 is a deficient number, since it is larger than the sum of its proper divisors (1).

677043431 is an equidigital number, since it uses as much as digits as its factorization.

677043431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 677043431 is about 26020.0582435935. The cubic root of 677043431 is about 878.0896191230.

The spelling of 677043431 in words is "six hundred seventy-seven million, forty-three thousand, four hundred thirty-one".