1321401332 has 24 divisors (see below), whose sum is σ = 2337239520. Its totient is φ = 653637600.

The previous prime is 1321401329. The next prime is 1321401343. The reversal of 1321401332 is 2331041231.

It is a super-2 number, since 2×1321401332² = 3492202960422748448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341207 + ... + 345057.

It is an arithmetic number, because the mean of its divisors is an integer number (97384980).

Almost surely, 2^1321401332 is an apocalyptic number.

It is an amenable number.

1321401332 is a deficient number, since it is larger than the sum of its proper divisors (1015838188).

1321401332 is a wasteful number, since it uses less digits than its factorization.

1321401332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4751 (or 4749 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1321401332 is about 36351.0843304570. The cubic root of 1321401332 is about 1097.3493567829.

Adding to 1321401332 its reverse (2331041231), we get a palindrome (3652442563).

The spelling of 1321401332 in words is "one billion, three hundred twenty-one million, four hundred one thousand, three hundred thirty-two".