1145431417 has 4 divisors (see below), whose sum is σ = 1233541540. Its totient is φ = 1057321296.

The previous prime is 1145431409. The next prime is 1145431439. The reversal of 1145431417 is 7141345411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 629959801 + 515471616 = 25099^2 + 22704^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145431417 - 2³ = 1145431409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145431517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44055042 + ... + 44055067.

It is an arithmetic number, because the mean of its divisors is an integer number (308385385).

Almost surely, 2^1145431417 is an apocalyptic number.

It is an amenable number.

1145431417 is a deficient number, since it is larger than the sum of its proper divisors (88110123).

1145431417 is an equidigital number, since it uses as much as digits as its factorization.

1145431417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88110122.

The product of its digits is 6720, while the sum is 31.

The square root of 1145431417 is about 33844.2228009449. Note that the first 3 decimals coincide. The cubic root of 1145431417 is about 1046.3003331534.

Adding to 1145431417 its reverse (7141345411), we get a palindrome (8286776828).

The spelling of 1145431417 in words is "one billion, one hundred forty-five million, four hundred thirty-one thousand, four hundred seventeen".