1128032531 has 2 divisors, whose sum is σ = 1128032532. Its totient is φ = 1128032530.

The previous prime is 1128032519. The next prime is 1128032533. The reversal of 1128032531 is 1352308211.

It is a strong prime.

It is an emirp because it is prime and its reverse (1352308211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128032531 is a prime.

It is a super-2 number, since 2×1128032531² = 2544914781988531922, which contains 22 as substring.

Together with 1128032533, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1128032531.

It is not a weakly prime, because it can be changed into another prime (1128032533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564016265 + 564016266.

It is an arithmetic number, because the mean of its divisors is an integer number (564016266).

Almost surely, 2^1128032531 is an apocalyptic number.

1128032531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128032531 is an equidigital number, since it uses as much as digits as its factorization.

1128032531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1128032531 is about 33586.1955422164. The cubic root of 1128032531 is about 1040.9755795717.

The spelling of 1128032531 in words is "one billion, one hundred twenty-eight million, thirty-two thousand, five hundred thirty-one".