1031228017 has 4 divisors (see below), whose sum is σ = 1031369956. Its totient is φ = 1031086080.

The previous prime is 1031227979. The next prime is 1031228027. The reversal of 1031228017 is 7108221301.

It is a happy number.

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 294431281 + 736796736 = 17159^2 + 27144^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031228017 - 2⁷ = 1031227889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031227982 and 1031228000.

It is not an unprimeable number, because it can be changed into a prime (1031228027) 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, 59448 + ... + 74809.

It is an arithmetic number, because the mean of its divisors is an integer number (257842489).

Almost surely, 2^1031228017 is an apocalyptic number.

It is an amenable number.

1031228017 is a deficient number, since it is larger than the sum of its proper divisors (141939).

1031228017 is an equidigital number, since it uses as much as digits as its factorization.

1031228017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141938.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1031228017 is about 32112.7391699930. The cubic root of 1031228017 is about 1010.3028262294.

Adding to 1031228017 its reverse (7108221301), we get a palindrome (8139449318).

The spelling of 1031228017 in words is "one billion, thirty-one million, two hundred twenty-eight thousand, seventeen".