1011123340 has 12 divisors (see below), whose sum is σ = 2123359056. Its totient is φ = 404449328.

The previous prime is 1011123329. The next prime is 1011123343. The reversal of 1011123340 is 433211101.

It is not an unprimeable number, because it can be changed into a prime (1011123343) 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, 25278064 + ... + 25278103.

It is an arithmetic number, because the mean of its divisors is an integer number (176946588).

Almost surely, 2^1011123340 is an apocalyptic number.

1011123340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011123340 is an abundant number, since it is smaller than the sum of its proper divisors (1112235716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011123340 is a wasteful number, since it uses less digits than its factorization.

1011123340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50556176 (or 50556174 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1011123340 is about 31798.1656703653. The cubic root of 1011123340 is about 1003.6941166979.

Adding to 1011123340 its reverse (433211101), we get a palindrome (1444334441).

The spelling of 1011123340 in words is "one billion, eleven million, one hundred twenty-three thousand, three hundred forty".