1231411043 has 2 divisors, whose sum is σ = 1231411044. Its totient is φ = 1231411042.

The previous prime is 1231411037. The next prime is 1231411057. The reversal of 1231411043 is 3401141321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231411043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231411003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615705521 + 615705522.

It is an arithmetic number, because the mean of its divisors is an integer number (615705522).

Almost surely, 2^1231411043 is an apocalyptic number.

1231411043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231411043 is an equidigital number, since it uses as much as digits as its factorization.

1231411043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1231411043 is about 35091.4668117478. The cubic root of 1231411043 is about 1071.8508284836.

Adding to 1231411043 its reverse (3401141321), we get a palindrome (4632552364).

The spelling of 1231411043 in words is "one billion, two hundred thirty-one million, four hundred eleven thousand, forty-three".