1313144506 has 4 divisors (see below), whose sum is σ = 1969716762. Its totient is φ = 656572252.

The previous prime is 1313144501. The next prime is 1313144519. The reversal of 1313144506 is 6054413131.

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

It can be written as a sum of positive squares in only one way, i.e., 1169024481 + 144120025 = 34191^2 + 12005^2 .

It is not an unprimeable number, because it can be changed into a prime (1313144501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328286125 + ... + 328286128.

Almost surely, 2^1313144506 is an apocalyptic number.

1313144506 is a deficient number, since it is larger than the sum of its proper divisors (656572256).

1313144506 is an equidigital number, since it uses as much as digits as its factorization.

1313144506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656572255.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1313144506 is about 36237.3358016287. The cubic root of 1313144506 is about 1095.0589700177.

Adding to 1313144506 its reverse (6054413131), we get a palindrome (7367557637).

The spelling of 1313144506 in words is "one billion, three hundred thirteen million, one hundred forty-four thousand, five hundred six".