1316143641 has 4 divisors (see below), whose sum is σ = 1754858192. Its totient is φ = 877429092.

The previous prime is 1316143639. The next prime is 1316143643. The reversal of 1316143641 is 1463416131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1316143639) and next prime (1316143643).

It is not a de Polignac number, because 1316143641 - 2¹ = 1316143639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1316143599 and 1316143608.

It is not an unprimeable number, because it can be changed into a prime (1316143643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219357271 + ... + 219357276.

It is an arithmetic number, because the mean of its divisors is an integer number (438714548).

Almost surely, 2^1316143641 is an apocalyptic number.

It is an amenable number.

1316143641 is a deficient number, since it is larger than the sum of its proper divisors (438714551).

1316143641 is an equidigital number, since it uses as much as digits as its factorization.

1316143641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438714550.

The product of its digits is 5184, while the sum is 30.

The square root of 1316143641 is about 36278.6940365830. The cubic root of 1316143641 is about 1095.8920168291.

Adding to 1316143641 its reverse (1463416131), we get a palindrome (2779559772).

The spelling of 1316143641 in words is "one billion, three hundred sixteen million, one hundred forty-three thousand, six hundred forty-one".