1310202304021 has 4 divisors (see below), whose sum is σ = 1410987096652. Its totient is φ = 1209417511392.

The previous prime is 1310202304013. The next prime is 1310202304031. The reversal of 1310202304021 is 1204032020131.

It is a happy number.

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 298345364100 + 1011856939921 = 546210^2 + 1005911^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310202304021 - 2³ = 1310202304013 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 1310202304021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310202304001) 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, 50392396296 + ... + 50392396321.

It is an arithmetic number, because the mean of its divisors is an integer number (352746774163).

Almost surely, 2^{1310202304021} is an apocalyptic number.

It is an amenable number.

1310202304021 is a deficient number, since it is larger than the sum of its proper divisors (100784792631).

1310202304021 is a wasteful number, since it uses less digits than its factorization.

1310202304021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100784792630.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1310202304021 its reverse (1204032020131), we get a palindrome (2514234324152).

The spelling of 1310202304021 in words is "one trillion, three hundred ten billion, two hundred two million, three hundred four thousand, twenty-one".