1331232442 has 32 divisors (see below), whose sum is σ = 2117896704. Its totient is φ = 626572800.

The previous prime is 1331232439. The next prime is 1331232451. The reversal of 1331232442 is 2442321331.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748258 + ... + 750034.

It is an arithmetic number, because the mean of its divisors is an integer number (66184272).

Almost surely, 2^1331232442 is an apocalyptic number.

1331232442 is a deficient number, since it is larger than the sum of its proper divisors (786664262).

1331232442 is a wasteful number, since it uses less digits than its factorization.

1331232442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134.

The product of its digits is 3456, while the sum is 25.

The square root of 1331232442 is about 36486.0581866554. The cubic root of 1331232442 is about 1100.0640298816.

Adding to 1331232442 its reverse (2442321331), we get a palindrome (3773553773).

Subtracting 1331232442 from its reverse (2442321331), we obtain a square (1111088889 = 33333²).

It can be divided in two parts, 13312 and 32442, that added together give a palindrome (45754).

The spelling of 1331232442 in words is "one billion, three hundred thirty-one million, two hundred thirty-two thousand, four hundred forty-two".