1351232320543 has 12 divisors (see below), whose sum is σ = 1583314983792. Its totient is φ = 1149745117920.

The previous prime is 1351232320541. The next prime is 1351232320561. The reversal of 1351232320543 is 3450232321531.

It is not a de Polignac number, because 1351232320543 - 2¹ = 1351232320541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1351232320499 and 1351232320508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351232320541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100636243 + ... + 100649668.

It is an arithmetic number, because the mean of its divisors is an integer number (131942915316).

Almost surely, 2^{1351232320543} is an apocalyptic number.

1351232320543 is a deficient number, since it is larger than the sum of its proper divisors (232082663249).

1351232320543 is a wasteful number, since it uses less digits than its factorization.

1351232320543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201286062 (or 201286055 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

The spelling of 1351232320543 in words is "one trillion, three hundred fifty-one billion, two hundred thirty-two million, three hundred twenty thousand, five hundred forty-three".