320320040434 has 4 divisors (see below), whose sum is σ = 480480060654. Its totient is φ = 160160020216.

The previous prime is 320320040419. The next prime is 320320040471. The reversal of 320320040434 is 434040023023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434040023023 = 49363 ⋅8792821.

It can be written as a sum of positive squares in only one way, i.e., 320133034809 + 187005625 = 565803^2 + 13675^2 .

It is a super-3 number, since 3×320320040434³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320320040399 and 320320040408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80080010107 + ... + 80080010110.

Almost surely, 2^320320040434 is an apocalyptic number.

320320040434 is a deficient number, since it is larger than the sum of its proper divisors (160160020220).

320320040434 is a wasteful number, since it uses less digits than its factorization.

320320040434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160160020219.

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 320320040434 its reverse (434040023023), we get a palindrome (754360063457).

The spelling of 320320040434 in words is "three hundred twenty billion, three hundred twenty million, forty thousand, four hundred thirty-four".