1313401161421 has 2 divisors, whose sum is σ = 1313401161422. Its totient is φ = 1313401161420.

The previous prime is 1313401161407. The next prime is 1313401161497. The reversal of 1313401161421 is 1241611043131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1306106122500 + 7295038921 = 1142850^2 + 85411^2 .

It is an emirp because it is prime and its reverse (1241611043131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313401161421 - 2⁹ = 1313401160909 is a prime.

It is a super-2 number, since 2×1313401161421² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1313401161421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313401161221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656700580710 + 656700580711.

It is an arithmetic number, because the mean of its divisors is an integer number (656700580711).

Almost surely, 2^{1313401161421} is an apocalyptic number.

It is an amenable number.

1313401161421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313401161421 is an equidigital number, since it uses as much as digits as its factorization.

1313401161421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 1313401161421 in words is "one trillion, three hundred thirteen billion, four hundred one million, one hundred sixty-one thousand, four hundred twenty-one".