1331772232 has 16 divisors (see below), whose sum is σ = 2853797760. Its totient is φ = 570759504.

The previous prime is 1331772229. The next prime is 1331772241. The reversal of 1331772232 is 2322771331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1331772194 and 1331772203.

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, 11890768 + ... + 11890879.

It is an arithmetic number, because the mean of its divisors is an integer number (178362360).

Almost surely, 2^1331772232 is an apocalyptic number.

It is an amenable number.

1331772232 is an abundant number, since it is smaller than the sum of its proper divisors (1522025528).

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

1331772232 is a wasteful number, since it uses less digits than its factorization.

1331772232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23781660 (or 23781656 counting only the distinct ones).

The product of its digits is 10584, while the sum is 31.

The square root of 1331772232 is about 36493.4546460047. The cubic root of 1331772232 is about 1100.2126949590.

Subtracting 1331772232 from its reverse (2322771331), we obtain a palindrome (990999099).

The spelling of 1331772232 in words is "one billion, three hundred thirty-one million, seven hundred seventy-two thousand, two hundred thirty-two".