1028551031 has 2 divisors, whose sum is σ = 1028551032. Its totient is φ = 1028551030.

The previous prime is 1028551021. The next prime is 1028551037. The reversal of 1028551031 is 1301558201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1028551031 - 2⁶ = 1028550967 is a prime.

It is a super-2 number, since 2×1028551031² = 2115834446742325922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028551037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514275515 + 514275516.

It is an arithmetic number, because the mean of its divisors is an integer number (514275516).

Almost surely, 2^1028551031 is an apocalyptic number.

1028551031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028551031 is an equidigital number, since it uses as much as digits as its factorization.

1028551031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1028551031 is about 32071.0310248985. The cubic root of 1028551031 is about 1009.4278467106.

It can be divided in two parts, 10285 and 51031, that added together give a palindrome (61316).

The spelling of 1028551031 in words is "one billion, twenty-eight million, five hundred fifty-one thousand, thirty-one".