1331131260 has 48 divisors (see below), whose sum is σ = 3923337600. Its totient is φ = 336285504.

The previous prime is 1331131231. The next prime is 1331131261. The reversal of 1331131260 is 621311331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331131261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582690 + ... + 584969.

It is an arithmetic number, because the mean of its divisors is an integer number (81736200).

Almost surely, 2^1331131260 is an apocalyptic number.

1331131260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331131260 is an abundant number, since it is smaller than the sum of its proper divisors (2592206340).

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

1331131260 is a wasteful number, since it uses less digits than its factorization.

1331131260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167690 (or 1167688 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1331131260 is about 36484.6715758824. The cubic root of 1331131260 is about 1100.0361585910.

Adding to 1331131260 its reverse (621311331), we get a palindrome (1952442591).

The spelling of 1331131260 in words is "one billion, three hundred thirty-one million, one hundred thirty-one thousand, two hundred sixty".