1310470821421 has 4 divisors (see below), whose sum is σ = 1310550661852. Its totient is φ = 1310390980992.

The previous prime is 1310470821379. The next prime is 1310470821463. The reversal of 1310470821421 is 1241280740131.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1310470821379) and next prime (1310470821463).

It can be written as a sum of positive squares in 2 ways, for example, as 268313640100 + 1042157181321 = 517990^2 + 1020861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310470821421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310470825421) 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, 39895590 + ... + 39928423.

It is an arithmetic number, because the mean of its divisors is an integer number (327637665463).

Almost surely, 2^{1310470821421} is an apocalyptic number.

It is an amenable number.

1310470821421 is a deficient number, since it is larger than the sum of its proper divisors (79840431).

1310470821421 is an equidigital number, since it uses as much as digits as its factorization.

1310470821421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79840430.

The product of its (nonzero) digits is 10752, while the sum is 34.

It can be divided in two parts, 13104708 and 21421, that added together give a square (13126129 = 3623²).

The spelling of 1310470821421 in words is "one trillion, three hundred ten billion, four hundred seventy million, eight hundred twenty-one thousand, four hundred twenty-one".