1089155231 has 2 divisors, whose sum is σ = 1089155232. Its totient is φ = 1089155230.

The previous prime is 1089155227. The next prime is 1089155237. The reversal of 1089155231 is 1325519801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1089155231 - 2² = 1089155227 is a prime.

It is a super-2 number, since 2×1089155231² = 2372518234429326722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1089155191 and 1089155200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089155237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544577615 + 544577616.

It is an arithmetic number, because the mean of its divisors is an integer number (544577616).

Almost surely, 2^1089155231 is an apocalyptic number.

1089155231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089155231 is an equidigital number, since it uses as much as digits as its factorization.

1089155231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 1089155231 is about 33002.3519010388. The cubic root of 1089155231 is about 1028.8765300743.

The spelling of 1089155231 in words is "one billion, eighty-nine million, one hundred fifty-five thousand, two hundred thirty-one".