1431444073 has 2 divisors, whose sum is σ = 1431444074. Its totient is φ = 1431444072.

The previous prime is 1431444023. The next prime is 1431444083. The reversal of 1431444073 is 3704441341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1388829289 + 42614784 = 37267^2 + 6528^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431444073 - 2⁹ = 1431443561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1431444023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715722036 + 715722037.

It is an arithmetic number, because the mean of its divisors is an integer number (715722037).

Almost surely, 2^1431444073 is an apocalyptic number.

It is an amenable number.

1431444073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431444073 is an equidigital number, since it uses as much as digits as its factorization.

1431444073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 1431444073 is about 37834.4297300752. The cubic root of 1431444073 is about 1127.0022806036.

The spelling of 1431444073 in words is "one billion, four hundred thirty-one million, four hundred forty-four thousand, seventy-three".