1313100421 has 8 divisors (see below), whose sum is σ = 1347131520. Its totient is φ = 1279503072.

The previous prime is 1313100413. The next prime is 1313100443. The reversal of 1313100421 is 1240013131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1313100421 - 2³ = 1313100413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313100395 and 1313100404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313100461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102301 + ... + 114418.

It is an arithmetic number, because the mean of its divisors is an integer number (168391440).

Almost surely, 2^1313100421 is an apocalyptic number.

It is an amenable number.

1313100421 is a deficient number, since it is larger than the sum of its proper divisors (34031099).

1313100421 is an equidigital number, since it uses as much as digits as its factorization.

1313100421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216875.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1313100421 is about 36236.7275150503. The cubic root of 1313100421 is about 1095.0467154093.

Adding to 1313100421 its reverse (1240013131), we get a palindrome (2553113552).

The spelling of 1313100421 in words is "one billion, three hundred thirteen million, one hundred thousand, four hundred twenty-one".