1085130997 has 2 divisors, whose sum is σ = 1085130998. Its totient is φ = 1085130996.

The previous prime is 1085130979. The next prime is 1085131031. The reversal of 1085130997 is 7990315801.

Together with previous prime (1085130979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1033879716 + 51251281 = 32154^2 + 7159^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085130997 - 2¹⁹ = 1084606709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1085130947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542565498 + 542565499.

It is an arithmetic number, because the mean of its divisors is an integer number (542565499).

Almost surely, 2^1085130997 is an apocalyptic number.

It is an amenable number.

1085130997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085130997 is an equidigital number, since it uses as much as digits as its factorization.

1085130997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 1085130997 is about 32941.3265822735. The cubic root of 1085130997 is about 1027.6077945489.

The spelling of 1085130997 in words is "one billion, eighty-five million, one hundred thirty thousand, nine hundred ninety-seven".