1231144504043 has 2 divisors, whose sum is σ = 1231144504044. Its totient is φ = 1231144504042.

The previous prime is 1231144503991. The next prime is 1231144504049. The reversal of 1231144504043 is 3404054411321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231144504043 - 2¹⁰ = 1231144503019 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231144504049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615572252021 + 615572252022.

It is an arithmetic number, because the mean of its divisors is an integer number (615572252022).

Almost surely, 2^{1231144504043} is an apocalyptic number.

1231144504043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231144504043 is an equidigital number, since it uses as much as digits as its factorization.

1231144504043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 1231144504043 its reverse (3404054411321), we get a palindrome (4635198915364).

The spelling of 1231144504043 in words is "one trillion, two hundred thirty-one billion, one hundred forty-four million, five hundred four thousand, forty-three".