320134331 has 4 divisors (see below), whose sum is σ = 349237464. Its totient is φ = 291031200.

The previous prime is 320134319. The next prime is 320134333. The reversal of 320134331 is 133431023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133431023 = 11 ⋅12130093.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320134331 is a prime.

It is a super-2 number, since 2×320134331² = 204971979769635122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320134333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14551550 + ... + 14551571.

It is an arithmetic number, because the mean of its divisors is an integer number (87309366).

Almost surely, 2^320134331 is an apocalyptic number.

320134331 is a deficient number, since it is larger than the sum of its proper divisors (29103133).

320134331 is a wasteful number, since it uses less digits than its factorization.

320134331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29103132.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 320134331 is about 17892.2980916371. The cubic root of 320134331 is about 684.0860747726.

Adding to 320134331 its reverse (133431023), we get a palindrome (453565354).

The spelling of 320134331 in words is "three hundred twenty million, one hundred thirty-four thousand, three hundred thirty-one".