1331042232 has 128 divisors (see below), whose sum is σ = 3734740800. Its totient is φ = 392491008.

The previous prime is 1331042231. The next prime is 1331042233. The reversal of 1331042232 is 2322401331.

It is an interprime number because it is at equal distance from previous prime (1331042231) and next prime (1331042233).

It is a junction number, because it is equal to n+sod(n) for n = 1331042199 and 1331042208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331042231) 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 31 ways as a sum of consecutive naturals, for example, 1420068 + ... + 1421004.

Almost surely, 2^1331042232 is an apocalyptic number.

1331042232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331042232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867370400).

1331042232 is an abundant number, since it is smaller than the sum of its proper divisors (2403698568).

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

1331042232 is a wasteful number, since it uses less digits than its factorization.

1331042232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1331042232 is about 36483.4514814594. The cubic root of 1331042232 is about 1100.0116340367.

Adding to 1331042232 its reverse (2322401331), we get a palindrome (3653443563).

The spelling of 1331042232 in words is "one billion, three hundred thirty-one million, forty-two thousand, two hundred thirty-two".