1321331098 has 32 divisors (see below), whose sum is σ = 2124806400. Its totient is φ = 614428416.

The previous prime is 1321331093. The next prime is 1321331111. The reversal of 1321331098 is 8901331231.

It is not an unprimeable number, because it can be changed into a prime (1321331093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 661990 + ... + 663982.

It is an arithmetic number, because the mean of its divisors is an integer number (66400200).

Almost surely, 2^1321331098 is an apocalyptic number.

1321331098 is a deficient number, since it is larger than the sum of its proper divisors (803475302).

1321331098 is a wasteful number, since it uses less digits than its factorization.

1321331098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1321331098 is about 36350.1182666577. The cubic root of 1321331098 is about 1097.3299146451.

The spelling of 1321331098 in words is "one billion, three hundred twenty-one million, three hundred thirty-one thousand, ninety-eight".