1431431207 has 2 divisors, whose sum is σ = 1431431208. Its totient is φ = 1431431206.

The previous prime is 1431431203. The next prime is 1431431249. The reversal of 1431431207 is 7021341341.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1431431207 - 2² = 1431431203 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1431431203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715715603 + 715715604.

It is an arithmetic number, because the mean of its divisors is an integer number (715715604).

Almost surely, 2^1431431207 is an apocalyptic number.

1431431207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431431207 is an equidigital number, since it uses as much as digits as its factorization.

1431431207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1431431207 is about 37834.2596993783. The cubic root of 1431431207 is about 1126.9989040473.

Adding to 1431431207 its reverse (7021341341), we get a palindrome (8452772548).

The spelling of 1431431207 in words is "one billion, four hundred thirty-one million, four hundred thirty-one thousand, two hundred seven".