1011723540 has 48 divisors (see below), whose sum is σ = 2955996288. Its totient is φ = 258062464.

The previous prime is 1011723527. The next prime is 1011723547. The reversal of 1011723540 is 453271101.

1011723540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1011723540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011723547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365187 + ... + 367946.

It is an arithmetic number, because the mean of its divisors is an integer number (61583256).

Almost surely, 2^1011723540 is an apocalyptic number.

1011723540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011723540 is an abundant number, since it is smaller than the sum of its proper divisors (1944272748).

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

1011723540 is a wasteful number, since it uses less digits than its factorization.

1011723540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733168 (or 733166 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 1011723540 is about 31807.6019215533. The cubic root of 1011723540 is about 1003.8926740933.

Adding to 1011723540 its reverse (453271101), we get a palindrome (1464994641).

The spelling of 1011723540 in words is "one billion, eleven million, seven hundred twenty-three thousand, five hundred forty".