1306343845421 has 8 divisors (see below), whose sum is σ = 1383199529400. Its totient is φ = 1229489486848.

The previous prime is 1306343845349. The next prime is 1306343845423. The reversal of 1306343845421 is 1245483436031.

It can be written as a sum of positive squares in 4 ways, for example, as 531215034025 + 775128811396 = 728845^2 + 880414^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1306343845421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306343845423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2290805 + ... + 2803653.

It is an arithmetic number, because the mean of its divisors is an integer number (172899941175).

Almost surely, 2^{1306343845421} is an apocalyptic number.

It is an amenable number.

1306343845421 is a deficient number, since it is larger than the sum of its proper divisors (76855683979).

1306343845421 is a wasteful number, since it uses less digits than its factorization.

1306343845421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662703.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 1306343845421 in words is "one trillion, three hundred six billion, three hundred forty-three million, eight hundred forty-five thousand, four hundred twenty-one".