1431342091 has 2 divisors, whose sum is σ = 1431342092. Its totient is φ = 1431342090.

The previous prime is 1431342083. The next prime is 1431342109. The reversal of 1431342091 is 1902431341.

Together with next prime (1431342109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1431342091 - 2³ = 1431342083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1431342071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715671045 + 715671046.

It is an arithmetic number, because the mean of its divisors is an integer number (715671046).

Almost surely, 2^1431342091 is an apocalyptic number.

1431342091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431342091 is an equidigital number, since it uses as much as digits as its factorization.

1431342091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1431342091 is about 37833.0819653911. The cubic root of 1431342091 is about 1126.9755158658.

The spelling of 1431342091 in words is "one billion, four hundred thirty-one million, three hundred forty-two thousand, ninety-one".