320994231 has 4 divisors (see below), whose sum is σ = 427992312. Its totient is φ = 213996152.

The previous prime is 320994199. The next prime is 320994239. The reversal of 320994231 is 132499023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132499023 = 3 ⋅44166341.

It is a cyclic number.

It is not a de Polignac number, because 320994231 - 2⁵ = 320994199 is a prime.

It is a super-2 number, since 2×320994231² = 206074592670562722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320994192 and 320994201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320994239) 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, 53499036 + ... + 53499041.

It is an arithmetic number, because the mean of its divisors is an integer number (106998078).

Almost surely, 2^320994231 is an apocalyptic number.

320994231 is a deficient number, since it is larger than the sum of its proper divisors (106998081).

320994231 is a wasteful number, since it uses less digits than its factorization.

320994231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106998080.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 320994231 is about 17916.3118693553. The cubic root of 320994231 is about 684.6980259190.

The spelling of 320994231 in words is "three hundred twenty million, nine hundred ninety-four thousand, two hundred thirty-one".