1011320545 has 8 divisors (see below), whose sum is σ = 1226096424. Its totient is φ = 800715264.

The previous prime is 1011320539. The next prime is 1011320549. The reversal of 1011320545 is 5450231101.

It is a happy number.

1011320545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 652864 + 1010667681 = 808^2 + 31791^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1011320545 - 2⁷ = 1011320417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011320549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042114 + ... + 1043083.

It is an arithmetic number, because the mean of its divisors is an integer number (153262053).

Almost surely, 2^1011320545 is an apocalyptic number.

It is an amenable number.

1011320545 is a deficient number, since it is larger than the sum of its proper divisors (214775879).

1011320545 is an equidigital number, since it uses as much as digits as its factorization.

1011320545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085299.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1011320545 is about 31801.2664056009. The cubic root of 1011320545 is about 1003.7593644686.

Adding to 1011320545 its reverse (5450231101), we get a palindrome (6461551646).

The spelling of 1011320545 in words is "one billion, eleven million, three hundred twenty thousand, five hundred forty-five".