1231451324443 has 2 divisors, whose sum is σ = 1231451324444. Its totient is φ = 1231451324442.

The previous prime is 1231451324407. The next prime is 1231451324447. The reversal of 1231451324443 is 3444231541321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231451324443 - 2³³ = 1222861389851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231451324447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615725662221 + 615725662222.

It is an arithmetic number, because the mean of its divisors is an integer number (615725662222).

Almost surely, 2^{1231451324443} is an apocalyptic number.

1231451324443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231451324443 is an equidigital number, since it uses as much as digits as its factorization.

1231451324443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 37.

Adding to 1231451324443 its reverse (3444231541321), we get a palindrome (4675682865764).

The spelling of 1231451324443 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-one million, three hundred twenty-four thousand, four hundred forty-three".