1028011123 has 2 divisors, whose sum is σ = 1028011124. Its totient is φ = 1028011122.

The previous prime is 1028011109. The next prime is 1028011157. The reversal of 1028011123 is 3211108201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1028011123 - 2⁵ = 1028011091 is a prime.

It is a super-2 number, since 2×1028011123² = 2113613738023442258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1028011123.

It is not a weakly prime, because it can be changed into another prime (1028015123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514005561 + 514005562.

It is an arithmetic number, because the mean of its divisors is an integer number (514005562).

Almost surely, 2^1028011123 is an apocalyptic number.

1028011123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028011123 is an equidigital number, since it uses as much as digits as its factorization.

1028011123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1028011123 is about 32062.6125417128. The cubic root of 1028011123 is about 1009.2511925173.

Adding to 1028011123 its reverse (3211108201), we get a palindrome (4239119324).

The spelling of 1028011123 in words is "one billion, twenty-eight million, eleven thousand, one hundred twenty-three".