1313373601 has 4 divisors (see below), whose sum is σ = 1313567892. Its totient is φ = 1313179312.

The previous prime is 1313373569. The next prime is 1313373619. The reversal of 1313373601 is 1063733131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1063733131 = 7283 ⋅146057.

It can be written as a sum of positive squares in 2 ways, for example, as 856440225 + 456933376 = 29265^2 + 21376^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313373601 - 2⁵ = 1313373569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313373601.

It is not an unprimeable number, because it can be changed into a prime (1313373631) 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, 86626 + ... + 100651.

It is an arithmetic number, because the mean of its divisors is an integer number (328391973).

Almost surely, 2^1313373601 is an apocalyptic number.

It is an amenable number.

1313373601 is a deficient number, since it is larger than the sum of its proper divisors (194291).

1313373601 is an equidigital number, since it uses as much as digits as its factorization.

1313373601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194290.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 1313373601 is about 36240.4966991348. The cubic root of 1313373601 is about 1095.1226487029.

The spelling of 1313373601 in words is "one billion, three hundred thirteen million, three hundred seventy-three thousand, six hundred one".