1331230260 has 24 divisors (see below), whose sum is σ = 3727444896. Its totient is φ = 354994720.

The previous prime is 1331230259. The next prime is 1331230261. The reversal of 1331230260 is 620321331.

It is an interprime number because it is at equal distance from previous prime (1331230259) and next prime (1331230261).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331230261) by changing a digit.

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, 11093526 + ... + 11093645.

It is an arithmetic number, because the mean of its divisors is an integer number (155310204).

Almost surely, 2^1331230260 is an apocalyptic number.

1331230260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331230260 is an abundant number, since it is smaller than the sum of its proper divisors (2396214636).

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

1331230260 is a wasteful number, since it uses less digits than its factorization.

1331230260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22187183 (or 22187181 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1331230260 is about 36486.0282848106. The cubic root of 1331230260 is about 1100.0634288493.

Adding to 1331230260 its reverse (620321331), we get a palindrome (1951551591).

The spelling of 1331230260 in words is "one billion, three hundred thirty-one million, two hundred thirty thousand, two hundred sixty".