1431742997 has 2 divisors, whose sum is σ = 1431742998. Its totient is φ = 1431742996.

The previous prime is 1431742979. The next prime is 1431743059. The reversal of 1431742997 is 7992471341.

Together with previous prime (1431742979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1256418916 + 175324081 = 35446^2 + 13241^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431742997 - 2⁶ = 1431742933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1431742927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715871498 + 715871499.

It is an arithmetic number, because the mean of its divisors is an integer number (715871499).

Almost surely, 2^1431742997 is an apocalyptic number.

It is an amenable number.

1431742997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431742997 is an equidigital number, since it uses as much as digits as its factorization.

1431742997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 47.

The square root of 1431742997 is about 37838.3799468212. The cubic root of 1431742997 is about 1127.0807246002.

The spelling of 1431742997 in words is "one billion, four hundred thirty-one million, seven hundred forty-two thousand, nine hundred ninety-seven".