1085328131 has 4 divisors (see below), whose sum is σ = 1085396664. Its totient is φ = 1085259600.

The previous prime is 1085328121. The next prime is 1085328137. The reversal of 1085328131 is 1318235801.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1318235801 = 743 ⋅1774207.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1085328131 is a prime.

It is a super-2 number, since 2×1085328131² = 2355874303879906322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085328137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2996 + ... + 46686.

It is an arithmetic number, because the mean of its divisors is an integer number (271349166).

Almost surely, 2^1085328131 is an apocalyptic number.

1085328131 is a deficient number, since it is larger than the sum of its proper divisors (68533).

1085328131 is an equidigital number, since it uses as much as digits as its factorization.

1085328131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68532.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 1085328131 is about 32944.3186452535. The cubic root of 1085328131 is about 1027.6700187318.

The spelling of 1085328131 in words is "one billion, eighty-five million, three hundred twenty-eight thousand, one hundred thirty-one".