1361313143 has 8 divisors (see below), whose sum is σ = 1369396512. Its totient is φ = 1353242016.

The previous prime is 1361313103. The next prime is 1361313181. The reversal of 1361313143 is 3413131631.

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 1361313143 - 2¹⁰ = 1361312119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361313103) 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, 312446 + ... + 316772.

It is an arithmetic number, because the mean of its divisors is an integer number (171174564).

Almost surely, 2^1361313143 is an apocalyptic number.

1361313143 is a deficient number, since it is larger than the sum of its proper divisors (8083369).

1361313143 is a wasteful number, since it uses less digits than its factorization.

1361313143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6121.

The product of its digits is 1944, while the sum is 26.

The square root of 1361313143 is about 36895.9773281587. The cubic root of 1361313143 is about 1108.2881230897.

Adding to 1361313143 its reverse (3413131631), we get a palindrome (4774444774).

The spelling of 1361313143 in words is "one billion, three hundred sixty-one million, three hundred thirteen thousand, one hundred forty-three".