1313453161 has 4 divisors (see below), whose sum is σ = 1325503300. Its totient is φ = 1301403024.

The previous prime is 1313453153. The next prime is 1313453179. The reversal of 1313453161 is 1613543131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 535043161 + 778410000 = 23131^2 + 27900^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313453161 - 2³ = 1313453153 is a prime.

It is a super-2 number, since 2×1313453161² = 3450318412281783842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313453101) 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, 6024906 + ... + 6025123.

It is an arithmetic number, because the mean of its divisors is an integer number (331375825).

Almost surely, 2^1313453161 is an apocalyptic number.

It is an amenable number.

1313453161 is a deficient number, since it is larger than the sum of its proper divisors (12050139).

1313453161 is a wasteful number, since it uses less digits than its factorization.

1313453161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12050138.

The product of its digits is 3240, while the sum is 28.

The square root of 1313453161 is about 36241.5943495868. The cubic root of 1313453161 is about 1095.1447612733.

Adding to 1313453161 its reverse (1613543131), we get a palindrome (2926996292).

The spelling of 1313453161 in words is "one billion, three hundred thirteen million, four hundred fifty-three thousand, one hundred sixty-one".