1321322498 has 16 divisors (see below), whose sum is σ = 2032392600. Its totient is φ = 643891200.

The previous prime is 1321322473. The next prime is 1321322531. The reversal of 1321322498 is 8942231231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1208049049 + 113273449 = 34757^2 + 10643^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78338 + ... + 93698.

Almost surely, 2^1321322498 is an apocalyptic number.

1321322498 is a deficient number, since it is larger than the sum of its proper divisors (711070102).

1321322498 is a wasteful number, since it uses less digits than its factorization.

1321322498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16453.

The product of its digits is 20736, while the sum is 35.

The square root of 1321322498 is about 36349.9999724897. Note that the first 4 decimals coincide. The cubic root of 1321322498 is about 1097.3275339505.

The spelling of 1321322498 in words is "one billion, three hundred twenty-one million, three hundred twenty-two thousand, four hundred ninety-eight".