1321450277 has 12 divisors (see below), whose sum is σ = 1538523936. Its totient is φ = 1131694200.

The previous prime is 1321450267. The next prime is 1321450283. The reversal of 1321450277 is 7720541231.

It is not a de Polignac number, because 1321450277 - 2¹⁶ = 1321384741 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321450267) 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 11 ways as a sum of consecutive naturals, for example, 48902 + ... + 70952.

It is an arithmetic number, because the mean of its divisors is an integer number (128210328).

Almost surely, 2^1321450277 is an apocalyptic number.

It is an amenable number.

1321450277 is a deficient number, since it is larger than the sum of its proper divisors (217073659).

1321450277 is a wasteful number, since it uses less digits than its factorization.

1321450277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23288 (or 23281 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 1321450277 is about 36351.7575503579. The cubic root of 1321450277 is about 1097.3629053039.

The spelling of 1321450277 in words is "one billion, three hundred twenty-one million, four hundred fifty thousand, two hundred seventy-seven".