1331272032 has 24 divisors (see below), whose sum is σ = 3494589336. Its totient is φ = 443757312.

The previous prime is 1331272027. The next prime is 1331272051. The reversal of 1331272032 is 2302721331.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1331271993 and 1331272011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6933613 + ... + 6933804.

It is an arithmetic number, because the mean of its divisors is an integer number (145607889).

Almost surely, 2^1331272032 is an apocalyptic number.

1331272032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1331272032 is an abundant number, since it is smaller than the sum of its proper divisors (2163317304).

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

1331272032 is a wasteful number, since it uses less digits than its factorization.

1331272032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13867430 (or 13867422 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 1331272032 is about 36486.6007186200. The cubic root of 1331272032 is about 1100.0749348400.

Adding to 1331272032 its reverse (2302721331), we get a palindrome (3633993363).

The spelling of 1331272032 in words is "one billion, three hundred thirty-one million, two hundred seventy-two thousand, thirty-two".