1011320245 has 8 divisors (see below), whose sum is σ = 1306937016. Its totient is φ = 746821056.

The previous prime is 1011320243. The next prime is 1011320267. The reversal of 1011320245 is 5420231101.

It can be written as a sum of positive squares in 4 ways, for example, as 21399876 + 989920369 = 4626^2 + 31463^2 .

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 1011320245 - 2¹ = 1011320243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011320243) 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, 7779322 + ... + 7779451.

It is an arithmetic number, because the mean of its divisors is an integer number (163367127).

Almost surely, 2^1011320245 is an apocalyptic number.

It is an amenable number.

1011320245 is a deficient number, since it is larger than the sum of its proper divisors (295616771).

1011320245 is a wasteful number, since it uses less digits than its factorization.

1011320245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15558791.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1011320245 is about 31801.2616888073. The cubic root of 1011320245 is about 1003.7592652163.

Adding to 1011320245 its reverse (5420231101), we get a palindrome (6431551346).

The spelling of 1011320245 in words is "one billion, eleven million, three hundred twenty thousand, two hundred forty-five".