1431742077257 has 2 divisors, whose sum is σ = 1431742077258. Its totient is φ = 1431742077256.

The previous prime is 1431742077223. The next prime is 1431742077263. The reversal of 1431742077257 is 7527702471341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1153671476281 + 278070600976 = 1074091^2 + 527324^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431742077257 - 2¹² = 1431742073161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1431742077217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715871038628 + 715871038629.

It is an arithmetic number, because the mean of its divisors is an integer number (715871038629).

Almost surely, 2^{1431742077257} is an apocalyptic number.

It is an amenable number.

1431742077257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431742077257 is an equidigital number, since it uses as much as digits as its factorization.

1431742077257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304960, while the sum is 50.

The spelling of 1431742077257 in words is "one trillion, four hundred thirty-one billion, seven hundred forty-two million, seventy-seven thousand, two hundred fifty-seven".