1313363161 has 12 divisors (see below), whose sum is σ = 1470859236. Its totient is φ = 1171433120.

The previous prime is 1313363153. The next prime is 1313363167. The reversal of 1313363161 is 1613633131.

It can be written as a sum of positive squares in 2 ways, for example, as 827425225 + 485937936 = 28765^2 + 22044^2 .

It is not a de Polignac number, because 1313363161 - 2³ = 1313363153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313363167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95986 + ... + 108811.

It is an arithmetic number, because the mean of its divisors is an integer number (122571603).

Almost surely, 2^1313363161 is an apocalyptic number.

1313363161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1313363161 is a deficient number, since it is larger than the sum of its proper divisors (157496075).

1313363161 is a wasteful number, since it uses less digits than its factorization.

1313363161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204872 (or 204861 counting only the distinct ones).

The product of its digits is 2916, while the sum is 28.

The square root of 1313363161 is about 36240.3526610876. The cubic root of 1313363161 is about 1095.1197469871.

Adding to 1313363161 its reverse (1613633131), we get a palindrome (2926996292).

The spelling of 1313363161 in words is "one billion, three hundred thirteen million, three hundred sixty-three thousand, one hundred sixty-one".