1331521052 has 24 divisors (see below), whose sum is σ = 2410649472. Its totient is φ = 642859200.

The previous prime is 1331521033. The next prime is 1331521091. The reversal of 1331521052 is 2501251331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 45518 + ... + 68810.

It is an arithmetic number, because the mean of its divisors is an integer number (100443728).

Almost surely, 2^1331521052 is an apocalyptic number.

It is an amenable number.

1331521052 is a deficient number, since it is larger than the sum of its proper divisors (1079128420).

1331521052 is a wasteful number, since it uses less digits than its factorization.

1331521052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23789 (or 23787 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1331521052 is about 36490.0130446674. The cubic root of 1331521052 is about 1100.1435217691.

Adding to 1331521052 its reverse (2501251331), we get a palindrome (3832772383).

The spelling of 1331521052 in words is "one billion, three hundred thirty-one million, five hundred twenty-one thousand, fifty-two".