1431400043 has 2 divisors, whose sum is σ = 1431400044. Its totient is φ = 1431400042.

The previous prime is 1431400037. The next prime is 1431400073. The reversal of 1431400043 is 3400041341.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1431400043 - 2⁸ = 1431399787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1431399988 and 1431400024.

It is not a weakly prime, because it can be changed into another prime (1431400013) 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, 715700021 + 715700022.

It is an arithmetic number, because the mean of its divisors is an integer number (715700022).

Almost surely, 2^1431400043 is an apocalyptic number.

1431400043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431400043 is an equidigital number, since it uses as much as digits as its factorization.

1431400043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1431400043 is about 37833.8478481901. The cubic root of 1431400043 is about 1126.9907252752.

Adding to 1431400043 its reverse (3400041341), we get a palindrome (4831441384).

The spelling of 1431400043 in words is "one billion, four hundred thirty-one million, four hundred thousand, forty-three".