1431403139 has 2 divisors, whose sum is σ = 1431403140. Its totient is φ = 1431403138.

The previous prime is 1431403117. The next prime is 1431403147. The reversal of 1431403139 is 9313041341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1431403139 - 2⁸ = 1431402883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1431403159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715701569 + 715701570.

It is an arithmetic number, because the mean of its divisors is an integer number (715701570).

Almost surely, 2^1431403139 is an apocalyptic number.

1431403139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431403139 is an equidigital number, since it uses as much as digits as its factorization.

1431403139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1431403139 is about 37833.8887639111. Note that the first 3 decimals coincide. The cubic root of 1431403139 is about 1126.9915378039.

The spelling of 1431403139 in words is "one billion, four hundred thirty-one million, four hundred three thousand, one hundred thirty-nine".