1366143631 has 2 divisors, whose sum is σ = 1366143632. Its totient is φ = 1366143630.

The previous prime is 1366143599. The next prime is 1366143641. The reversal of 1366143631 is 1363416631.

It is a strong prime.

It is an emirp because it is prime and its reverse (1363416631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1366143631 - 2⁵ = 1366143599 is a prime.

It is a super-2 number, since 2×1366143631² = 3732696841043728322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366143641) 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, 683071815 + 683071816.

It is an arithmetic number, because the mean of its divisors is an integer number (683071816).

Almost surely, 2^1366143631 is an apocalyptic number.

1366143631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366143631 is an equidigital number, since it uses as much as digits as its factorization.

1366143631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 34.

The square root of 1366143631 is about 36961.3802637293. The cubic root of 1366143631 is about 1109.5974600214.

The spelling of 1366143631 in words is "one billion, three hundred sixty-six million, one hundred forty-three thousand, six hundred thirty-one".