1313655601 has 4 divisors (see below), whose sum is σ = 1358954100. Its totient is φ = 1268357104.

The previous prime is 1313655587. The next prime is 1313655617. The reversal of 1313655601 is 1065563131.

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 899940001 + 413715600 = 29999^2 + 20340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313655601 is a prime.

It is a super-3 number, since 3×1313655601³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313655641) 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, 22649206 + ... + 22649263.

It is an arithmetic number, because the mean of its divisors is an integer number (339738525).

Almost surely, 2^1313655601 is an apocalyptic number.

It is an amenable number.

1313655601 is a deficient number, since it is larger than the sum of its proper divisors (45298499).

1313655601 is an equidigital number, since it uses as much as digits as its factorization.

1313655601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45298498.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 1313655601 is about 36244.3871654633. The cubic root of 1313655601 is about 1095.2010225655.

The spelling of 1313655601 in words is "one billion, three hundred thirteen million, six hundred fifty-five thousand, six hundred one".