1011223040 has 160 divisors (see below), whose sum is σ = 2565438480. Its totient is φ = 381681664.

The previous prime is 1011223033. The next prime is 1011223067. The reversal of 1011223040 is 403221101.

It can be written as a sum of positive squares in 8 ways, for example, as 858255616 + 152967424 = 29296^2 + 12368^2 .

It is a tau number, because it is divible by the number of its divisors (160).

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, 3934592 + ... + 3934848.

Almost surely, 2^1011223040 is an apocalyptic number.

1011223040 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 1011223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1282719240).

1011223040 is an abundant number, since it is smaller than the sum of its proper divisors (1554215440).

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

1011223040 is an equidigital number, since it uses as much as digits as its factorization.

1011223040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1011223040 is about 31799.7333322152. The cubic root of 1011223040 is about 1003.7271047653.

Adding to 1011223040 its reverse (403221101), we get a palindrome (1414444141).

The spelling of 1011223040 in words is "one billion, eleven million, two hundred twenty-three thousand, forty".