1331425140 has 48 divisors (see below), whose sum is σ = 3748617600. Its totient is φ = 353082240.

The previous prime is 1331425097. The next prime is 1331425163. The reversal of 1331425140 is 415241331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331425140.

It is a congruent number.

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, 50440 + ... + 72159.

It is an arithmetic number, because the mean of its divisors is an integer number (78096200).

Almost surely, 2^1331425140 is an apocalyptic number.

1331425140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331425140 is an abundant number, since it is smaller than the sum of its proper divisors (2417192460).

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

1331425140 is a wasteful number, since it uses less digits than its factorization.

1331425140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122792 (or 122790 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1331425140 is about 36488.6987983951. The cubic root of 1331425140 is about 1100.1171059898.

Adding to 1331425140 its reverse (415241331), we get a palindrome (1746666471).

The spelling of 1331425140 in words is "one billion, three hundred thirty-one million, four hundred twenty-five thousand, one hundred forty".