1320663143 has 8 divisors (see below), whose sum is σ = 1330360848. Its totient is φ = 1310989504.

The previous prime is 1320663131. The next prime is 1320663167. The reversal of 1320663143 is 3413660231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320663143 - 2¹⁴ = 1320646759 is a prime.

It is a super-2 number, since 2×1320663143² = 3488302274557276898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320663193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112571 + ... + 123747.

It is an arithmetic number, because the mean of its divisors is an integer number (166295106).

Almost surely, 2^1320663143 is an apocalyptic number.

1320663143 is a deficient number, since it is larger than the sum of its proper divisors (9697705).

1320663143 is a wasteful number, since it uses less digits than its factorization.

1320663143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12033.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 1320663143 is about 36340.9293084258. The cubic root of 1320663143 is about 1097.1449772619.

The spelling of 1320663143 in words is "one billion, three hundred twenty million, six hundred sixty-three thousand, one hundred forty-three".