1313030235021 has 4 divisors (see below), whose sum is σ = 1750706980032. Its totient is φ = 875353490012.

The previous prime is 1313030234993. The next prime is 1313030235113. The reversal of 1313030235021 is 1205320303131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1313030235021 - 2¹⁴ = 1313030218637 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1313030234982 and 1313030235000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313030335021) 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, 218838372501 + ... + 218838372506.

It is an arithmetic number, because the mean of its divisors is an integer number (437676745008).

Almost surely, 2^{1313030235021} is an apocalyptic number.

It is an amenable number.

1313030235021 is a deficient number, since it is larger than the sum of its proper divisors (437676745011).

1313030235021 is an equidigital number, since it uses as much as digits as its factorization.

1313030235021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437676745010.

The product of its (nonzero) digits is 1620, while the sum is 24.

Adding to 1313030235021 its reverse (1205320303131), we get a palindrome (2518350538152).

The spelling of 1313030235021 in words is "one trillion, three hundred thirteen billion, thirty million, two hundred thirty-five thousand, twenty-one".