1330231240 has 32 divisors (see below), whose sum is σ = 3223253880. Its totient is φ = 491162112.

The previous prime is 1330231237. The next prime is 1330231277. The reversal of 1330231240 is 421320331.

It can be written as a sum of positive squares in 4 ways, for example, as 552156004 + 778075236 = 23498^2 + 27894^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278549 + ... + 1279588.

Almost surely, 2^1330231240 is an apocalyptic number.

1330231240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1330231240 is an abundant number, since it is smaller than the sum of its proper divisors (1893022640).

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

1330231240 is a wasteful number, since it uses less digits than its factorization.

1330231240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558161 (or 2558157 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1330231240 is about 36472.3352693518. The cubic root of 1330231240 is about 1099.7881795993.

Adding to 1330231240 its reverse (421320331), we get a palindrome (1751551571).

The spelling of 1330231240 in words is "one billion, three hundred thirty million, two hundred thirty-one thousand, two hundred forty".