1011320564 has 24 divisors (see below), whose sum is σ = 1833753600. Its totient is φ = 487513440.

The previous prime is 1011320561. The next prime is 1011320621. The reversal of 1011320564 is 4650231101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011320561) 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, 18197 + ... + 48515.

It is an arithmetic number, because the mean of its divisors is an integer number (76406400).

Almost surely, 2^1011320564 is an apocalyptic number.

It is an amenable number.

1011320564 is a deficient number, since it is larger than the sum of its proper divisors (822433036).

1011320564 is a wasteful number, since it uses less digits than its factorization.

1011320564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30623 (or 30621 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1011320564 is about 31801.2667043311. The cubic root of 1011320564 is about 1003.7593707546.

Adding to 1011320564 its reverse (4650231101), we get a palindrome (5661551665).

The spelling of 1011320564 in words is "one billion, eleven million, three hundred twenty thousand, five hundred sixty-four".