771344423431 has 2 divisors, whose sum is σ = 771344423432. Its totient is φ = 771344423430.

The previous prime is 771344423429. The next prime is 771344423453. The reversal of 771344423431 is 134324443177.

It is a weak prime.

It is an emirp because it is prime and its reverse (134324443177) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 771344423431 - 2¹ = 771344423429 is a prime.

It is a super-2 number, since 2×771344423431² (a number of 25 digits) contains 22 as substring.

Together with 771344423429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (771344423471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385672211715 + 385672211716.

It is an arithmetic number, because the mean of its divisors is an integer number (385672211716).

Almost surely, 2^771344423431 is an apocalyptic number.

771344423431 is a deficient number, since it is larger than the sum of its proper divisors (1).

771344423431 is an equidigital number, since it uses as much as digits as its factorization.

771344423431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 43.

The spelling of 771344423431 in words is "seven hundred seventy-one billion, three hundred forty-four million, four hundred twenty-three thousand, four hundred thirty-one".