1011431140 has 12 divisors (see below), whose sum is σ = 2124005436. Its totient is φ = 404572448.

The previous prime is 1011431131. The next prime is 1011431177. The reversal of 1011431140 is 411341101.

1011431140 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 2 ways, for example, as 630712996 + 380718144 = 25114^2 + 19512^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25285759 + ... + 25285798.

It is an arithmetic number, because the mean of its divisors is an integer number (177000453).

Almost surely, 2^1011431140 is an apocalyptic number.

1011431140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011431140 is an abundant number, since it is smaller than the sum of its proper divisors (1112574296).

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

1011431140 is a wasteful number, since it uses less digits than its factorization.

1011431140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50571566 (or 50571564 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1011431140 is about 31803.0052039112. The cubic root of 1011431140 is about 1003.7959525122.

Adding to 1011431140 its reverse (411341101), we get a palindrome (1422772241).

The spelling of 1011431140 in words is "one billion, eleven million, four hundred thirty-one thousand, one hundred forty".