1321013332 has 12 divisors (see below), whose sum is σ = 2312332596. Its totient is φ = 660346880.

The previous prime is 1321013263. The next prime is 1321013357. The reversal of 1321013332 is 2333101231.

It can be written as a sum of positive squares in 2 ways, for example, as 792197316 + 528816016 = 28146^2 + 22996^2 .

It is a congruent number.

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, 20269 + ... + 55252.

It is an arithmetic number, because the mean of its divisors is an integer number (192694383).

Almost surely, 2^1321013332 is an apocalyptic number.

It is an amenable number.

1321013332 is a deficient number, since it is larger than the sum of its proper divisors (991319264).

1321013332 is a wasteful number, since it uses less digits than its factorization.

1321013332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79898 (or 79896 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1321013332 is about 36345.7470964623. The cubic root of 1321013332 is about 1097.2419422224.

Adding to 1321013332 its reverse (2333101231), we get a palindrome (3654114563).

The spelling of 1321013332 in words is "one billion, three hundred twenty-one million, thirteen thousand, three hundred thirty-two".