320987334 has 16 divisors (see below), whose sum is σ = 644535360. Its totient is φ = 106569000.

The previous prime is 320987309. The next prime is 320987363. The reversal of 320987334 is 433789023.

It is a junction number, because it is equal to n+sod(n) for n = 320987292 and 320987301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105064 + ... + 108075.

It is an arithmetic number, because the mean of its divisors is an integer number (40283460).

Almost surely, 2^320987334 is an apocalyptic number.

320987334 is an abundant number, since it is smaller than the sum of its proper divisors (323548026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320987334 is a wasteful number, since it uses less digits than its factorization.

320987334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213395.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 320987334 is about 17916.1193900911. The cubic root of 320987334 is about 684.6931219927.

The spelling of 320987334 in words is "three hundred twenty million, nine hundred eighty-seven thousand, three hundred thirty-four".