1431244169 has 2 divisors, whose sum is σ = 1431244170. Its totient is φ = 1431244168.

The previous prime is 1431244109. The next prime is 1431244193. The reversal of 1431244169 is 9614421341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 806844025 + 624400144 = 28405^2 + 24988^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431244169 - 2¹⁶ = 1431178633 is a prime.

It is a super-2 number, since 2×1431244169² = 4096919742593001122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1431244109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715622084 + 715622085.

It is an arithmetic number, because the mean of its divisors is an integer number (715622085).

Almost surely, 2^1431244169 is an apocalyptic number.

It is an amenable number.

1431244169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431244169 is an equidigital number, since it uses as much as digits as its factorization.

1431244169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 1431244169 is about 37831.7878113102. The cubic root of 1431244169 is about 1126.9498154610.

The spelling of 1431244169 in words is "one billion, four hundred thirty-one million, two hundred forty-four thousand, one hundred sixty-nine".