1284231677 has 2 divisors, whose sum is σ = 1284231678. Its totient is φ = 1284231676.

The previous prime is 1284231671. The next prime is 1284231727. The reversal of 1284231677 is 7761324821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1233835876 + 50395801 = 35126^2 + 7099^2 .

It is a cyclic number.

It is not a de Polignac number, because 1284231677 - 2¹⁴ = 1284215293 is a prime.

It is a super-3 number, since 3×1284231677³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284231671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642115838 + 642115839.

It is an arithmetic number, because the mean of its divisors is an integer number (642115839).

Almost surely, 2^1284231677 is an apocalyptic number.

It is an amenable number.

1284231677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284231677 is an equidigital number, since it uses as much as digits as its factorization.

1284231677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 1284231677 is about 35836.1783258204. The cubic root of 1284231677 is about 1086.9622449336.

The spelling of 1284231677 in words is "one billion, two hundred eighty-four million, two hundred thirty-one thousand, six hundred seventy-seven".