1011681232 has 40 divisors (see below), whose sum is σ = 2062258632. Its totient is φ = 480153600.

The previous prime is 1011681227. The next prime is 1011681233. The reversal of 1011681232 is 2321861101.

It can be written as a sum of positive squares in 4 ways, for example, as 257409936 + 754271296 = 16044^2 + 27464^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1011681197 and 1011681206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011681233) 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, 3432 + ... + 45112.

Almost surely, 2^1011681232 is an apocalyptic number.

It is an amenable number.

1011681232 is an abundant number, since it is smaller than the sum of its proper divisors (1050577400).

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

1011681232 is a wasteful number, since it uses less digits than its factorization.

1011681232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41767 (or 41761 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1011681232 is about 31806.9368534601. The cubic root of 1011681232 is about 1003.8786803880.

It can be divided in two parts, 101168 and 1232, that added together give a square (102400 = 320²).

The spelling of 1011681232 in words is "one billion, eleven million, six hundred eighty-one thousand, two hundred thirty-two".