1440331230 has 120 divisors (see below), whose sum is σ = 3838416696. Its totient is φ = 345895680.

The previous prime is 1440331229. The next prime is 1440331237. The reversal of 1440331230 is 321330441.

It is a super-2 number, since 2×1440331230² = 4149108104226625800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1440331197 and 1440331206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440331237) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 35130010 + ... + 35130050.

Almost surely, 2^1440331230 is an apocalyptic number.

1440331230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440331230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1919208348).

1440331230 is an abundant number, since it is smaller than the sum of its proper divisors (2398085466).

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

1440331230 is an frugal number, since it uses more digits than its factorization.

1440331230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1440331230 is about 37951.6960095330. The cubic root of 1440331230 is about 1129.3298111761.

Adding to 1440331230 its reverse (321330441), we get a palindrome (1761661671).

The spelling of 1440331230 in words is "one billion, four hundred forty million, three hundred thirty-one thousand, two hundred thirty".