1011230440 has 64 divisors (see below), whose sum is σ = 2494800000. Its totient is φ = 365840640.

The previous prime is 1011230419. The next prime is 1011230459. The reversal of 1011230440 is 440321101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81786 + ... + 93334.

It is an arithmetic number, because the mean of its divisors is an integer number (38981250).

Almost surely, 2^1011230440 is an apocalyptic number.

1011230440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011230440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1247400000).

1011230440 is an abundant number, since it is smaller than the sum of its proper divisors (1483569560).

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

1011230440 is a wasteful number, since it uses less digits than its factorization.

1011230440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11770 (or 11766 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1011230440 is about 31799.8496851793. The cubic root of 1011230440 is about 1003.7295531412.

Adding to 1011230440 its reverse (440321101), we get a palindrome (1451551541).

The spelling of 1011230440 in words is "one billion, eleven million, two hundred thirty thousand, four hundred forty".