1028264231 has 2 divisors, whose sum is σ = 1028264232. Its totient is φ = 1028264230.

The previous prime is 1028264219. The next prime is 1028264233. The reversal of 1028264231 is 1324628201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1028264231 - 2²² = 1024069927 is a prime.

It is a super-2 number, since 2×1028264231² = 2114654657508042722, which contains 22 as substring.

Together with 1028264233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1028264194 and 1028264203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028264233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514132115 + 514132116.

It is an arithmetic number, because the mean of its divisors is an integer number (514132116).

Almost surely, 2^1028264231 is an apocalyptic number.

1028264231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028264231 is an equidigital number, since it uses as much as digits as its factorization.

1028264231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1028264231 is about 32066.5593882474. The cubic root of 1028264231 is about 1009.3340154177.

The spelling of 1028264231 in words is "one billion, twenty-eight million, two hundred sixty-four thousand, two hundred thirty-one".