1128013231 has 2 divisors, whose sum is σ = 1128013232. Its totient is φ = 1128013230.

The previous prime is 1128013193. The next prime is 1128013241. The reversal of 1128013231 is 1323108211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1128013231 - 2¹⁷ = 1127882159 is a prime.

It is a super-2 number, since 2×1128013231² = 2544827698622118722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128013241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564006615 + 564006616.

It is an arithmetic number, because the mean of its divisors is an integer number (564006616).

Almost surely, 2^1128013231 is an apocalyptic number.

1128013231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128013231 is an equidigital number, since it uses as much as digits as its factorization.

1128013231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1128013231 is about 33585.9082205618. The cubic root of 1128013231 is about 1040.9696427030.

The spelling of 1128013231 in words is "one billion, one hundred twenty-eight million, thirteen thousand, two hundred thirty-one".