1011197305 has 8 divisors (see below), whose sum is σ = 1233329544. Its totient is φ = 795696000.

The previous prime is 1011197293. The next prime is 1011197329. The reversal of 1011197305 is 5037911101.

It can be written as a sum of positive squares in 4 ways, for example, as 55398249 + 955799056 = 7443^2 + 30916^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1011197305 - 2⁷ = 1011197177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1657396 + ... + 1658005.

It is an arithmetic number, because the mean of its divisors is an integer number (154166193).

Almost surely, 2^1011197305 is an apocalyptic number.

It is an amenable number.

1011197305 is a deficient number, since it is larger than the sum of its proper divisors (222132239).

1011197305 is an equidigital number, since it uses as much as digits as its factorization.

1011197305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315467.

The product of its (nonzero) digits is 945, while the sum is 28.

The square root of 1011197305 is about 31799.3286878827. The cubic root of 1011197305 is about 1003.7185899487.

It can be divided in two parts, 10111 and 97305, that added together give a triangular number (107416 = T₄₆₃).

The spelling of 1011197305 in words is "one billion, eleven million, one hundred ninety-seven thousand, three hundred five".