1431200191 has 2 divisors, whose sum is σ = 1431200192. Its totient is φ = 1431200190.

The previous prime is 1431200119. The next prime is 1431200209. The reversal of 1431200191 is 1910021341.

Together with previous prime (1431200119) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1431200191 - 2¹¹ = 1431198143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1431200101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715600095 + 715600096.

It is an arithmetic number, because the mean of its divisors is an integer number (715600096).

Almost surely, 2^1431200191 is an apocalyptic number.

1431200191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431200191 is an equidigital number, since it uses as much as digits as its factorization.

1431200191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1431200191 is about 37831.2065760531. The cubic root of 1431200191 is about 1126.9382727050.

The spelling of 1431200191 in words is "one billion, four hundred thirty-one million, two hundred thousand, one hundred ninety-one".