1310313135421 has 2 divisors, whose sum is σ = 1310313135422. Its totient is φ = 1310313135420.

The previous prime is 1310313135419. The next prime is 1310313135529. The reversal of 1310313135421 is 1245313130131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1258691023396 + 51622112025 = 1121914^2 + 227205^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310313135421 - 2¹ = 1310313135419 is a prime.

Together with 1310313135419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1310313135421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310313135121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655156567710 + 655156567711.

It is an arithmetic number, because the mean of its divisors is an integer number (655156567711).

Almost surely, 2^{1310313135421} is an apocalyptic number.

It is an amenable number.

1310313135421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310313135421 is an equidigital number, since it uses as much as digits as its factorization.

1310313135421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 1310313135421 its reverse (1245313130131), we get a palindrome (2555626265552).

The spelling of 1310313135421 in words is "one trillion, three hundred ten billion, three hundred thirteen million, one hundred thirty-five thousand, four hundred twenty-one".