1011101240 has 32 divisors (see below), whose sum is σ = 2353428000. Its totient is φ = 390493824.

The previous prime is 1011101227. The next prime is 1011101249. The reversal of 1011101240 is 421011101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011101249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434660 + ... + 436979.

It is an arithmetic number, because the mean of its divisors is an integer number (73544625).

Almost surely, 2^1011101240 is an apocalyptic number.

1011101240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011101240 is an abundant number, since it is smaller than the sum of its proper divisors (1342326760).

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

1011101240 is a wasteful number, since it uses less digits than its factorization.

1011101240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871679 (or 871675 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1011101240 is about 31797.8181641445. The cubic root of 1011101240 is about 1003.6868041045.

Adding to 1011101240 its reverse (421011101), we get a palindrome (1432112341).

The spelling of 1011101240 in words is "one billion, eleven million, one hundred one thousand, two hundred forty".